3/20/24, 11:42 AM MidSem_20.03.2024_GNR+DIU_CS/IT314_9.30 to 11.

30 AM: Attempt review

Dashboard / My courses / CS/IT314_2024 / General / MidSem_20.03.2024_GNR+DIU_CS/IT314_9.30 to 11.30 AM

Started on Wednesday, 20 March 2024, 9:30 AM

State Finished
Completed on Wednesday, 20 March 2024, 11:21 AM
Time taken 1 hour 51 mins

Question 1
Complete

Marked out of 1.00

In cellular system, neighboring stations are assigned different group of channels to

a. minimize area coverage

b. maximize throughput

c. minimize interference

d. maximize capacity of each cell

Question 2
Complete

Marked out of 1.00

In Orthogonal Frequency Division Multiplexing, the guard interval is provided to

a. None of these

b. To maintain orthogonality

c. To attain high symbol rate

d. To eliminate Inter Symbol Interference (ISI)

Question 3

Complete

Marked out of 1.00

What parameter in LEACH determines the probability of a node becoming a cluster head?

a. All of these

b. Node density

c. Transmission power

d. Residual energy of a node

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Question 4

Complete

Marked out of 1.00

What does GSM stand for?

a. Global System for Mobile Communications

b. Global System for Mobility

c. Global Standard for Mobile Devices

d. General System for Mobile Connectivity

Question 5
Complete

Marked out of 1.00

Why is a cyclic prefix required in Orthogonal Frequency Division Multiplexing?

a. To maintain orthogonality

b. To ensure symbol time is an integer number

c. To help overcome Inter Symbol Interference (ISI)

d. None of these

Question 6
Complete

Marked out of 1.00

Why the shape of cell in a cellular system is hexagonal not circle?

a. Omni directionality

b. Complex design

c. Overlapping regions or gaps are left

d. None of these

Question 7
Complete

Marked out of 1.00

The Signaling Correction Control Part (SS7) protocol supports the interface between the BSC and MSC.

a. False

b. True

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Question 8

Complete

Marked out of 1.00

The number of sensor nodes in an Adhoc network is more than in a Wireless Sensor Network

a. False

b. True

Question 9
Complete

Marked out of 1.00

How does OFDM mitigate the effects of frequency-selective fading?

a. By employing frequency-hopping

b. By employing error correction coding

c. By utilizing cyclic prefix

d. By using differential encoding

Question 10

Complete

Marked out of 1.00

Determine the capacity of a cellular system, with cluster size i = 1, j = 1 where each cell is allocated a group of 60 channels and
replication factor M = 6.

a.
1680
N x M x no. of channels

b. None of these

c. 1080

d. 720

Question 11

Complete

Marked out of 1.00

The barcodes needs Line of Sight (LoS) communication to be scanned by the barcode reader?

a. False

b. True

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Question 12

Complete

Marked out of 1.00

What is the primary advantage of GPRS compared to traditional GSM?

a. Faster data transmission

b. Higher voice quality

c. Longer battery life

d. Greater coverage range

Question 13
Complete

Marked out of 1.00

An unauthorized access of information from a wireless device through a Bluetooth connection is called _________________

a. Blueprint

b. Bluesnarfing

c. None of these

d. Bluestring

Question 14
Complete

Marked out of 1.00

a. 3.46

b. 6.25

c. 5.75

d. 4.58

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Question 15

Complete

Marked out of 1.00

Which one of the following statement is correct?

In hidden terminal problem,

a. Two sender nodes are not in the communication range of each other

b. Hidden terminal problem is independent of node's communication range

c. None of these

d. Two sender nodes are in the communication range of each other

Question 16
Complete

Marked out of 1.00

In a closed room environment with several scattered objects, a signal is going to fade due to

a. None of these

b. Small scale fading

c. Large scale fading

d. Both small and large scale fading

Question 17
Complete

Marked out of 1.00

A base station (BS) is transmitting with a power of 75 watt at frequency fc = 915 MHz, the distance between the BS and the receiver
mobile unit is 50 m. Calculate the power received in dBm by the mobile unit considering free space propagation, where both the
transmitting and receiving antenna has unit gain.

a. 16.89 dBm

b. 2.046 × 10-2 dBm

c. –16.89 dBm

d. None of these

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Question 18

Complete

Marked out of 1.00

a. 4400 total capacity = M x no. of channels

b. None of these

c. 4200

d. 4800

Question 19

Complete

Marked out of 1.00

Which multiple access technology is used in LTE?

a. TDMA

b. FDMA

c. CDMA

d. OFDMA

Question 20
Complete

Marked out of 1.00

Determine the signal-to-interference ratio (SIR) in dB, for path loss η = 3 and i = 2, j =1 . There are six co-channel cells in cellular
system.

a. 4.5 dB

b. 16.03 dB

c. 12.05 dB

d. None of these

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Question 21

Complete

Marked out of 1.00

In a dense urban environment, path loss exponent η = 3 and there are six number of co-channel cells in cellular system. The
minimum required signal to interference ratio is 12.05 dB. Determine the smallest cluster size needed to maintain this minimum
required .

a. 7

b. 4

c. 1

d. 3

Question 22
Complete

Marked out of 1.00

What is the primary advantage of OFDM in wireless communication systems?

a. Reduced power consumption

b. Lower latency

c. Increased spectral efficiency

d. Simplified receiver design

Question 23
Complete

Marked out of 1.00

In LEACH, what technique is used to reduce energy consumption during data transmission?

a. Frequency division multiple access (FDMA)

b. Spatial division multiple access (SDMA)

c. Code division multiple access (CDMA)

d. Time division multiple access (TDMA)

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Question 24

Complete

Marked out of 1.00

a.
9.16

b. 7.75

c.
4.59

d.
10.00

Question 25
Complete

Marked out of 1.00

In the link design analysis the power received path loss is not a function of

a. Transmitter power

b.
Antenna Gain

c. Distance between the transmitter and receiver

d. None of these

Question 26
Complete

Marked out of 1.00

The frequency range of IEEE 802.11b standard is

a. 5 GHz

b. 2.4 GHz

c. 5 Gbps

d. 2.4 Gbps

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Question 27

Complete

Marked out of 1.00

The 5G technology uses

a. None of these

b. Infrared wave

c. Microwave

d. Millimeter wave

Question 28
Complete

Marked out of 1.00

The coverage are of a cellular system is 2400 sq km. Each hexagonal cell having a radius of 4.806 km. There are total 500 radio
channels allocated for the cellular system. Calculate the system capacity (C) for cluster size N =4.

a. 1000 area of hexagon = (3*root3*r^2)/2

b. 1600 no. of cells = total area/ area of one cell

c. 4000 k = radio channels per cell = total no. of radio channels / total no. of cells

d. 5000 use k in erlang formula

Question 29
Complete

Marked out of 1.00

Which of the following statement is incorrect

a. OFDM (Orthogonal Frequency Division Multiplexing) provides a high spectral efficiency and data rate.

b. In OFDM (Orthogonal Frequency Division Multiplexing), the ICI (Inter-carrier-Interference) and ISI (Inter-Symbol-Interference)
problem is less.

c. In OFDM (Orthogonal Frequency Division Multiplexing), the PARP (Peak to average power ratio) is less.

d. None of these

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Question 30

Complete

Marked out of 1.00

What is the maximum number of timeslots used for GPRS in the GSM frame structure?

a. 8

b. 4

c. 12

d. 16

Question 31
Complete

Marked out of 1.00

Which of the statement is incorrect among the following

a. The PCU (Packet Control Unit) in GPRS directs the circuit switched data to standard GSM network and packet switched data to

GPRS network.

b. The PCU (Packet Control Unit) in GPRS directs the circuit switched data to GPRS network and packet switched data to standard
GSM network.

c. The PCU (Packet Control Unit) in GPRS directs only the packet switched data to GPRS network.

d. None of these

Question 32
Complete

Marked out of 1.00

In OFDM (Orthogonal Frequency Division Multiplexing), a set of different subcarriers overlapping in frequency domain. However,
these subcarriers are

a. None of these

b.

c.

d.

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Question 33

Complete

Marked out of 1.00

Which entity in the GPRS architecture is responsible for the mobility management of users?

a. Mobile Station (MS)

b. Gateway GPRS Support Node (GGSN)

c. Base Transceiver Station (BTS)

d. Serving GPRS Support Node (SGSN)

Question 34
Complete

Marked out of 1.00

In the link design analysis, the received power is not a function of

a.
Transmitter power

b. Antenna gain

c.
Doppler shift

d.
Path loss

Question 35
Complete

Marked out of 1.00

What is the purpose of the guard interval in OFDM?

a. To provide security

b. To increase the data rate

c. To guard against Inter Symbol Interference (ISI)

d. To protect against frequency-selective fading

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Question 36

Complete

Marked out of 1.00

Which one of the following is not a characteristic of ADHOC network?

a. Fixed infrastructure

b. No fixed infrastructure

c. Energy-constrained

d. Dynamic changing topology

Question 37
Complete

Marked out of 1.00

Which of the following statement is incorrect?

a.
In soft handoff, the existing connection with the Base Station (BS) must be broken before establishing a connection with a new
BS.

b. In hard handoff, the mobile unit simultaneously remain connected to more than one Base Station (BS).

c. In hard handoff, the existing connection with the Base Station (BS) must be broken before establishing a connection with a new
BS.

d.
In soft handoff, a new connection is established before the old one is released.

Question 38
Complete

Marked out of 1.00

Which of the statement is correct among the following

a. UTMS networks has a packet switched element.

b. UTMS networks has both circuit and packet switched element.

c. UTMS networks has a circuit switched element.

d. None of these

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Question 39

Complete

Marked out of 1.00

GPRS (General Packet Radio Service) is an example of

a. 2 G

b. 2.5 G

c. 3 G

d. 1 G

Question 40
Complete

Marked out of 1.00

What is the LTE technology used for VoLTE (Voice over LTE)?

a. None of these

b. Circuit-switched fallback (CSFB)

c. Voice over IP (VoIP)

d. Single Radio Voice Call Continuity (SRVCC)

Question 41
Complete

Marked out of 1.00

What is the use of an Radio Frequency Identifier module?

a. To measure the Wi-Fi strength

b. Object Indentification

c. To provide 3G Connectivity

d. To monitor temperature

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Question 42

Complete

Marked out of 1.00

In an AMPS cellular operator, there are 355 channels of 33 KHz each in a bandwidth of 12.5 MHz. If a narrowband TDMA
system is used with frame duration 40 ms, with 8 time slots per frame, duration of time slot that carries data is 4.25 ms, then
calculate the spectral efficiency of the TDMA system.

a. None of these

b. 80%

c. 100%

d. 94%

Question 43

Complete

Marked out of 1.00

For a roaming user who is visiting a new MSC, the IMSI (International Mobile Subscriber Identity) will be temporarily stored in
____________________

a. All of these

b. HLR (Home Location Register)

c. VLR (Visitor Location Register)

d. AuC (Authentication Center)

Question 44
Complete

Marked out of 1.00

The interface between an mobile user and its nearest base transceiver station is

a. A Interface

b. Air Interface

c. None of these

d. Abis Interface

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Question 45

Complete

Marked out of 1.00

The interface between the UTRAN (UMTS Terrestrial Radio Access Network) and the CN (Core Network) is

a. lur interface

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b. lu interface

c. lub interface

d. None of these

Question 46
Complete

Marked out of 1.00

The Adhoc network is a centralized type of network

a. True

b. False

Question 47
Complete

Marked out of 1.00

Which of the following statement is incorrect about microcell zone concept?

a. No loss in trunking efficiency

b.
More number of handoffs

c.
Increase in capacity

d.
Reduced interference

Question 48
Complete

Marked out of 1.00

Which feature of GPRS enables more efficient use of network resources compared to traditional GSM?

a. Voice call prioritization

b. Circuit-switched data transmission

c. Dedicated communication paths for data transfer

d. Always-on connectivity

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Question 49

Complete

Marked out of 1.00

Among them which one is not a multicarrier modulation technique

a. OFDM (Orthogonal Frequency Division Multiplexing)

b. CDMA (Code Division Multiple Access)

c. None of these

d. GFDM (Generalized Frequency Division Multiplexing)

Question 50
Complete

Marked out of 1.00

To avoid cell dragging which parameters has to carefully handled

a.
Transmitting power of Base Station (BS)

b. Both transmitting power of BS and distance between the BS and the mobile unit

c.
Distance between the BS and the mobile unit

d.
Handoff threshold

Question 51
Complete

Marked out of 1.00

A spectrum of 30 MHz is allocated to a cellular system which uses two 25 KHz simplex channels to provide full duplex voice channels.
What is the number of channels available per cell for 3 cell reuse factor?

a. 300 channels

b. 150 channels

c. None of these

d. 200 channels

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Question 52

Complete

Marked out of 1.00

What is the typical communication technique between cluster heads and the base station in LEACH?

a. Spatial division multiple access (SDMA)

b. Frequency division multiple access (FDMA)

c. Code division multiple access (CDMA)

d. Time division multiple access (TDMA)

Question 53
Complete

Marked out of 1.00

What is the purpose of the Base Station Controller (BSC) in GSM?

a. Encoding voice signals

b. Processing billing information

c. Providing Internet connectivity

d. Managing handovers between cells

Question 54
Complete

Marked out of 1.00

Which of the following is a feature of VoLTE but not necessarily of LTE?

a. Multi-user MIMO (Multiple Input Multiple Output)

b. Carrier aggregation

c. Enhanced voice codecs

d. Support for high-definition (HD) voice calls

Question 55
Complete

Marked out of 1.00

The Radio Frequency Identifier tag needs Line of Sight (LoS) communication to be scanned by the Radio Frequency Identifier reader?

a. False

b. True

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Question 56

Complete

Marked out of 1.00

A network of five mobile phones for data sharing is created using Bluetooth, what is the operating frequency of this network

a. None of these

b. 200 MHz

c. 2.4 GHz

d. 5 GHz

Question 57
Complete

Marked out of 1.00

Which of the statement is incorrect among the following

a. The A5 algorithm is used to provide the scrambling for the 114 coded data bits sent in each time slot.

b. A3 is a ciphering algorithm used to provide scrambling of coded data bits but A5 is not an ciphering algorithm.

c. The A3 ciphering algorithm is used to authenticate each mobile by verifying the user passcode within the SIM with the
cryptographic key.

d. All of these

Question 58

Complete

Marked out of 1.00

Which of the following is not a component of the UMTS core network?

a. Base Transceiver Station (BTS)

b. Home Location Register (HLR)

c. Gateway GPRS Support Node (GGSN)

d. Serving GPRS Support Node (SGSN)

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Question 59

Complete

Marked out of 1.00

a. 1600

Capacity of cellular system = N x M x no. of channels

b. 1480

c. 1680

d. None of these

Question 60

Complete

Marked out of 1.00

In MAHO, what does the mobile station (MS) measure to determine neighboring cells?

a. Timing advance

b. Carrier frequency offset

c. Received signal strength indicator (RSSI)

d. Transmission power

Question 61
Complete

Marked out of 1.00

What is the typical communication technique between cluster heads and the cluster nodes in LEACH?

a. Frequency division multiple access (FDMA)

b. Spatial division multiple access (SDMA)

c. Code division multiple access (CDMA)

d.
Time division multiple access (TDMA)

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Question 62

Complete

Marked out of 1.00

A Bluetooth enabled wireless device supports

a. None of these

b. point-to-point communication

c. both point-to-point and point-to-multipoint communication

d. point-to-multipoint communication

Question 63
Complete

Marked out of 1.00

What is the typical communication pattern between cluster heads and the base station in LEACH?

a. Broadcast

b. All of these

c. Unicast

d. Multicast

Question 64
Complete

Marked out of 1.00

In MACA protocol, a neighboring node near the sender which receives RTS (request to send) packet

a. will delay the transmission for long enough time so that the sender could receive the CTS packet from the destined receiver

b. will delay the transmission it receives the CTS packet

c. will not transmits till it receives the data packet

d. will transmit RTS-CTS packets ae per the requirements

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Question 65

Complete

Marked out of 1.00

What is a cluster in cellular system?

a. A large group of mobile systems

b. A small geographic area

c. A group of cells

d. A group of subscribers

Question 66
Complete

Marked out of 1.00

An Radio Frequency Identifier (RFID) system, consists of how many components

a. Three

b. Two

c. Four

d. One

Question 67
Complete

Marked out of 1.00

What type of network topology does LEACH create in wireless sensor networks?

a. Mesh

b. Clustered

c. Star

d. Ring

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Question 68

Complete

Marked out of 1.00

Among the following which is not a part of Base Station Subsystem (BSS)

a. Base Transceiver Station (BTS)

b. Mobile Station (MS)

c. Mobile Switching Centre (MSC)

d.
Base Station Controller (BSC)

Question 69
Complete

Marked out of 1.00

The UMTS is based on _________________ multiple access technique.

a. CDMA

b. SDMA

c. TDMA

d. FDMA

Question 70
Complete

Marked out of 1.00

Which of the following is a characteristic of MANET (Mobile Ad hoc Network)?

a. Centralized control

b. Fixed network infrastructure

c. High data throughput

d. Mobility of nodes

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Question 71

Complete

Marked out of 1.00

The uplink and downlink frequency channels of GSM are separated by

a. None of these

b. 45 MHz

c. 25 MHz

d. 50 MHz

Question 72
Complete

Marked out of 1.00

For a roaming user who is visiting a new MSC, the IMSI (International Mobile Subscriber Identity) will be temporarily stored in
………………

a. AUC (Authentication Center)

b. HLR (Home Location Register)

c. None of these

d. VLR (Visitor Location Register)

Question 73

Complete

Marked out of 1.00

What frequency band is commonly used for UMTS deployments?

a. 2100 MHz

b. 2600 MHz

c. 800 MHz

d. 1800 MHz

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Question 74

Complete

Marked out of 1.00

In a cellular system, the capacity pf the system is directly proportional to

a. Number of times a cluster is replicated

b. None of these

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c. Number of Base stations

d. Number of cells

Question 75

Complete

Marked out of 1.00

An Radio Frequency Identifier (RFID) reader, consists of how many components?

a. Two

b. One

c. Three

d. Four

Question 76
Complete

Marked out of 1.00

What is full form of UMTS?

a. Universal Mobile Telecommunications System

b. Universal Mobile Telecommunication Server

c. Universal Mobile Telephonic System

d. Universal Mobile Telephonic Server

Question 77
Complete

Marked out of 1.00

If a user is in a voice call and also want to use his/her data connection uninterruptedly then which network will be preferred

a. None of these

b. VoLTE

c. LTE

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Question 78

Complete

Marked out of 1.00

Which of the following is responsible for the transmission and reception of radio signals in UTRAN?

a. Node B

b. Home Location Register (HLR)

c. Serving GPRS Support Node (SGSN)

d. Radio Network Controller (RNC)

Question 79
Complete

Marked out of 1.00

What is the primary difference between 4G LTE and 4G VoLTE networks?

a. LTE provides higher data speeds, while VoLTE provides better voice quality

b. LTE operates on different frequency bands than VoLTE

c. LTE uses circuit-switched technology, while VoLTE uses packet-switched technology

d. LTE focuses on data transmission, while VoLTE focuses on voice calls

Question 80
Complete

Marked out of 1.00

In MACA protocol, which of the following packet avoids hidden terminal problem

a. RTS (request to send)

b. CTS (clear to send)

c. None of these

d. ACK

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Question 81

Complete

Marked out of 1.00

If the distance between co-channel cells are D and the cell radius is R, then the co-channel reuse ratio is given by

a. D2/R

b. D*R

c. D/R2

d. D/R

Question 82
Complete

Marked out of 1.00

In a MACA protocol, a neighbor node near the receiver upon hearing the CTS (clear to send) packet

a. will refrain from its transmission till the receiver receives the entire data packet

b. All of these

c. may initiates its data transmission process as per the requirement

d. will send RTS (request to send) packet to the transmitter/sender

Question 83
Complete

Marked out of 1.00

Which of the following is not a phase in the LEACH protocol?

a. Data collection phase

b. Steady-state phase

c. Cluster formation phase

d. Setup phase

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Question 84

Complete

Marked out of 1.00

Which of the statement is incorrect among the following

a. None of these

b. UTMS networks has a circuit switched element.

c. UTMS networks has both circuit and packet switched element.

d.
UTMS networks has a circuit switched element.

Question 85
Complete

Marked out of 1.00

What defines an Ad-hoc network?

a. A network that operates without any infrastructure

b. A network with centralized control

c. A network with a fixed topology

d. A network that relies solely on wired connections

Question 86

Complete

Marked out of 1.00

Among the following which is not a part of Network Switching Subsystem (NSS)

a. Base Transceiver Station (BTS)

b. Operation Support Subsystem (OSS)

c. Authentication Center (AUC)

d. Mobile Switching Centre (MSC)

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Question 87

Complete

Marked out of 1.00

Which of the following technologies is essential for VoLTE operation on LTE networks?

a. OFDM (Orthogonal Frequency Division Multiplexing)

b. Carrier Aggregation

c. MIMO (Multiple Input Multiple Output)

d. IMS (IP Multimedia Subsystem)

Question 88
Complete

Marked out of 1.00

In an AMPS cellular system, is allocated with 12.5 MHz for each simplex channel, the guard band at the two edges of the allocated
band is 6 KHz, and the channel spacing for each user is 25 KHz. Find the total number of channels available in the FDMA system and
the total numbers of users can be supported by the system.

a. 250 channels, 500 users

b. 500 channels, 500 users

c. 500 channels, 250 users

d. 250 channels, 250 users

Question 89
Complete

Marked out of 1.00

Wireless networks are same as computer networks, that uses radio frequency channels as their _____________________________ for
communication.

a. TDMA

b. CDMA

c. Physical media

d. Media access control

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Question 90

Complete

Marked out of 1.00

The uplink and downlink frequency bands of cellular GSM system are

a. None of these

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b. Uplink 935-960 MHz, Downlink 890-915 MHz

c. Uplink 890-915 MHz, Downlink 935-960 MHz

d. Uplink 1710-1785 MHz, Downlink 1805-1880 MHz

Jump to...

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Dashboard / My courses / CS/IT314_2024 / General / Quiz2_26.04.2024_GNR+DIU_CS/IT314

Started on Friday, 26 April 2024, 2:30 PM

State Finished
Completed on Friday, 26 April 2024, 2:44 PM
Time taken 14 mins 8 secs

Question 1
Complete

Marked out of 1.00

A network of five mobile phones for data sharing is created using Bluetooth, what is the operating frequency of this network

a. 2.48 GHz

b. 240 MHz

c. 24 GHz

d. 5 GHz

Question 2
Complete

Marked out of 1.00

Which among them has the strongest wireless security?

a. WPA3 (Wi-Fi Protected Access 3)

b. WEP (Wireless Equivalent Privacy)

c. WPA (Wi-Fi Protected Access)

d. WPA2 (Wi-Fi Protected Access 2)

Question 3

Complete

Marked out of 1.00

The interface between the UTRAN (UMTS Terrestrial Radio Access Network) and the CN (Core Network) is

a. lur interface

b. None of these

c. lu interface

d. lub interface

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Question 4

Complete

Marked out of 1.00

Which among the following is the least strong security encryption standard for wireless networks?

a. Wi-Fi Protected Access (WPA)

b. Wired Equivalent Privacy (WEP)

c. Wi-Fi Protected Access 2 (WPA2)

d. Wi-Fi Protected Access 3 (WPA3)

Question 5
Complete

Marked out of 1.00

Calculate the received power by a receiver antenna with gain . The power transmitted by the transmitter at 15 km distance is 50 watt
with operating frequency , antenna gain .

a. 6.8054 dBm

b. -68.054 dBm

c. None of these

d. 68.054 dBm

Question 6

Complete

Marked out of 1.00

Which encryption algorithm is primarily used by WPA for securing wireless networks?

a. RC4

b. AES

c. MD5

d. DES

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Question 7

Complete

Marked out of 1.00

A base station (BS) is transmitting with a power of 25 watt at frequency , the distance between the BS and the receiver mobile unit is
50 m. Calculate the power received in dBm by the mobile unit considering free space propagation, where both the transmitting and
receiving antenna has unit gain.

a. 4.949 dBm

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b. 49.49 dBm

c. None of these

d. -4.949 dBm

Question 8
Complete

Marked out of 1.00

The attacker instead of compromising a single computer & its internet bandwidth, a ____________ utilizes various systems & their
connections for flooding the targeted website.

a. Point-of-sale malware (POS) attack

b. None of these

c. Distributed Denial of Service (DDoS) attack

d. Denial of Service (DoS) attack

Question 9
Complete

Marked out of 1.00

To avoid cell dragging which parameters has to carefully handled

a. Both transmitting power of BS and distance between the BS and the mobile unit

b.
Handoff threshold

c.
Transmitting power of Base Station (BS)

d.
Distance between the BS and the mobile unit

Question 10
Complete

Marked out of 1.00

In UMTS architecture, the interface between the Node B and RNC (Radio Network Controller) is

a. None of these

b. lub interface

c. lur interface

d. lu interface

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Question 11

Complete

Marked out of 1.00

Which GSM security measure prevents unauthorized devices from accessing the GSM network?

a. TMSI reallocation

b. Ciphering

c. IMEI blocking

d. Authentication

Question 12
Complete

Marked out of 1.00

Packet Spoofing is a type of

a. Active attack

b. None of these

c. Passive attack

Question 13
Complete

Marked out of 1.00

In the Friis transmission equation, the power received is not a function of

a. Transmitter power

b.
Antenna Gain

c. None of these

d.
Distance between the transmitter and receiver

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Question 14

Complete

Marked out of 1.00

A digital signature is required for:

a. session hijacking

b. None of these

c. all e-mail sending

d. non repudiation of communication by a sender

Question 15
Complete

Marked out of 1.00

SYN flooding is an __________________ layer attack.

a. Data Link

b. Network

c. Application

d. Transport

Question 16
Complete

Marked out of 1.00

Which GSM security feature provides mutual authentication between the mobile device and the network?

a. Authentication Key (Ki)

b. IMEI blocking

c. International Mobile Subscriber Identity (IMSI) catching

d. Ciphering

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Question 17

Complete

Marked out of 1.00

In Low Energy Adaptive Clustering Hierarchy protocol, the communication between the nodes and the cluster head node is done
using

a. TDMA

b. CDMA

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c. SDMA

d. FDMA

Question 18

Complete

Marked out of 1.00

Which of the following is a Transport layer attack?

a. Blackhole attack

b. Byzantine attack

c. Malicious code attack

d. SYN flooding attack

Question 19
Complete

Marked out of 1.00

The network security requirement needed for industrial purposes is of

a. Level 1

b. Level 3

c. Level 0

d. Level 2

Question 20
Complete

Marked out of 1.00

Sound Navigation and Ranging (SONAR) technology uses _____________________________ for communication.

a. LASER

b. Infrared waves

c. Ultrasonic waves

d. Microwaves

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Question 21

Complete

Marked out of 1.00

Which version of WPA introduced the Temporal Key Integrity Protocol (TKIP)?

a. WPA3

b. WPA2

c. WPA-Personal

d. WPA

Question 22
Complete

Marked out of 1.00

The major constraint in a mobile sensor network (MSN) ______

a. Power Management

b. Mobility Management

c.
Heterogeneity

d. Bandwidth Management

Question 23

Complete

Marked out of 1.00

Which of the statement is wrong among the following

a. HSPA allows networks based UMTS (Universal Mobile Telecommunication Systems) to acquire higher data speed.

b. HSPA (High Speed Packet Access) is known as 3.5G.

c. HSPA+ (Evolved High Speed Packet Access) is known as 4G.

d. None of these

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Question 24

Complete

Marked out of 1.00

In a single sensor module, which one among the following is an optional unit

a. Memory unit

b. Processing unit

c. Sensing unit

d. Location finder or GPS

e. Power supply unit

Question 25

Complete

Marked out of 1.00

SS7 (Signalling System No. 7) protocol supports the interface between

a. BSC and MSC

b. MS and BTS

c.
BTS and BSC

d.
None of these

Jump to...

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Dashboard / My courses / CS/IT314 2024 / General / Quiz1_05.03.2024 GNR+DIU_CS/IT314

Started on Tuesday, 5 March 2024, 4:30 PM

State Finished
Completed on Tuesday, 5 March 2024, 4:45 PM
Time taken 15 mins 26 secs.

Question 1
Complete
Marked out of 1.00

Inter Symbol Interference is a phenomenon occurs in

a. None of these
b. both frequency and time domain
c. Frequency domain
d. Time domain

Question 2
Complete
Marked out of 1.00

Universal Mobile Telecommunications System (UMTS) is based on multiple access technique.

a.CDMA

b. SDMA
c FDMA
d. TDMA

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Question 3
Complete
Marked out of 1.00

A transceiver module in a wireless sensor network contains which component internally?

a. Electrodes

b. Antennas

c. Wires

d. None of these

Quest 4
Complete
Marked out of 1.00

Among the following statements which one is incorrect

a. None of these
b. Cellular networks are based on distributed routing and Adhoc networks are based on centralized routing.
c. Cellular networks are based on reuse of frequency spectrum through geographical channel reuse
d. High cost and time of deployment (cellular network) and Quick and cost-effective deployment (MANET)

Question §
Complete
Marked out of 1.00

Determine the signal-to-interference ratio (SIR) in dB, for path

loss n =3, and i = 1,j = 1. There are 9 co-channel cells in
cellular system.
a.40d8

54548

c.53dB

d.3.0dB

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Question &
Complete
Marked out of 1.00

Optical communication needs line of sight for communication between transmitter and receiver.

a. False

b. True

Question 7
Complete
Marked out of 1.00

In a dense urban environment, path loss exponent n = 4.5 and there are six number o
. .. . . . s
channel cells in cellular system. The minimum required signal to interference (7) rat
13 dB. Determine the smallest cluster size needed to maintain this minimum required
a5

Question 8
Complete
Marked out of 1.00

Which of the following statement is incorrect

2 None of these

b-1n OFDM (Orthogonal Frequency Division Multiplexing), the PARP (Peak to average power ratio) is less.

< In OFDM (Orthogonal Frequency Division Multiplexing), the ICI (Inter-carrier-Interference) and ISI (Inter-Symbol-Interference)
problem is less.

9- OFDM (Orthogonal Frequency Division Multiplexing) provides a high spectral efficiency and data rate.

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Question 9
Complete
Marked out of 1.00

Which of the following statement is incorrect

2 In soft handoff, a new connection is established before the old one is released.

b. In hard handoff, the mobile unit simultaneously remain connected to more than one Base station (BS).

I hard handoff, the existing connection with the Base station (BS) must be broken before establishing a connection with a new
BS

- Al of these

Question 10
Complete
Marked out of 1.00

For a roaming user who s visiting a new MSC, the IMS| (International Mobile Subscriber Identity) will be temporarily stored in

2 AUC (Authentication Center)

b.y|R (visitor Location Register)

None of these

d-piR (Home Location Register)

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Question 1
Complete
Marked out of 1.00

In a GPRS network, Serving GPRS Support Node is the equivalent of _____ system in GSM.

a. VIR
b. MsC
¢ AuC
d. BSC

Question 12
Complete
Marked out of 1.00

Which one among the following statement is wrong

a. In packet switching network, billing is based on the amount of transmitted data.

b. In circuit switching network, billing is based on the duration of the connection.

© GPRS is a packet switching network

9 In both circuit and packet switching networks, billing is based on the amount of transmitted data.

Question 13
Complete
Marked out of 1.00

The uplink and downlink frequency channels of GSM are separated by

a.45 MHz

b. None of these

c. 25 MHz

d. 50 MHz

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Question 14
Complete
Marked out of 1.00

Which one of the following statement is correct?

a. Mobile IP don't allows users to keep the same IP address while roaming
b. Mobile IP allows users to keep the same IP address while roaming

c. None of these

d. In Mobile IP, users changes it address to care-of-address while roaming

Question 15
Complete
Marked out of 1.00

The bandwidth of each ARFCN (Absolute Radio Frequency Channel Number) channel and number of subscriber supported by each
channel is

200 KHz, 8 users

b. 250 KHz, 8 users

€. 25 MHz, 6 users

9" None of these

Question 16
Complete
Marked out of 1.00

A universal Mobile Telecommunication System (UMTS) is a network.

d.2.5G6

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Question 17
Complete
Marked out of 1.00

Which of the statement is incorrect among the following

3 UTMS networks has a circuit switched element

b. UTMS networks has both circuit and packet switched element.

None of these

d- UTMS networks has a packet switched element.

Quesion 18
Complete
Marked out of 1.00

An Radio Frequency Identifier (RFID) reader, consists of how many components?

a. Two

b. Four
c.One

d. Three

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Question 19
Complete
Marked out of 1.00

Determine the capacity of a cellular system, with cluster size i = 1,j = 1 where each cell is allocated a group of 60 channels and
replication factor M = 6

a. 1080

b. None of these

c.720

d-1680

Question 20
Complete
Marked out of 1.00

The 5G technology uses

a. Millimeter wave

b. Microwave

c. Infrared wave

d. None of these

= Announcements

Jump to...

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4/21/23,7:.01 PM Quiz3_CS/IT 314_21-04-2023_3.00 PM to 3.15 PM: Attempt review

Dashboard / My courses / CS/IT314 2023 / General / Quiz3 CS/IT 314 21-04-2023 3.00 PM to 3.15 PM

Started on Friday, 21 April 2023, 3:01 PM

State Finished
Completed on Friday, 21 April 2023, 3:16 PM
Time taken 14 mins 59 secs

Question 1
Complete
Marked out of 1.00

To avoid cell dragging which parameters has to carefully handled

2 Distance between the BS and the mobile unit

b. Both transmitting power of BS and distance between the BS and the mobile unit

€ Transmitting power of Base Station (BS)

9- Handoff threshold

Question 2
Complete

Marked out of 1.00

In the Friis transmission equation, the power received is not a function of

& Distance between the transmitter and receiver Pr is the power available at the receiving
antenna output terminals.
Pt is the power fed into the transmitting antenna
input terminals.
b. None of these
Gt and Gr are the antenna gains of the
transmitting and receiving antennas respectively.
€ Antenna Gain is the wavelength of the radio frequency.
R is the distance between antennas

d. Transmitter power

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4/21/23,7:.01 PM Quiz3_CS/IT 314_21-04-2023_3.00 PM to 3.15 PM: Attempt review

Question 3
Complete
Marked out of 1.00

Determine the capacity of a cellular system, with cluster size i = 1,/ = 1 where each cell is allocated a group of 60 channels and replication
factor M = 6.

C = MkN [ kN = S] S = radio channel

a. None of these k = k channel
N = cluster size = i^2 + j^2 +ij
b. 720

c. 1080

d-1680

Question 4
Complete
Marked out of 1.00

In MACA protocol, a neighboring node near the sender which receives RTS (request to send) packet

a. will delay the transmission it receives the CTS packet

b. will not transmits till it receives the data packet

c. will transmit RTS-CTS packets ae per the requirements

d. will delay the transmission for long enough time so that the sender could receive the CTS packet from the destined receiver

Question 5
Complete
Marked out of 1.00

A digital signature is required for:

a. all e-mail sending

b. non repudiation of communication by a sender
. session hijacking
d. None of these

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Question 6
Complete
Marked out of 1.00

The attacker instead of compromising a single computer& ts internet bandwidth, a utilizes various systems & their connections
for flooding the targeted website.

a. None of these

b. Point-of-sale malware (POS) attack

c. Denial of Service (DoS) attack

d. Distributed Denial of Service (DDoS) attack

Question 7
Complete
Marked out of 1.00

The interface between the UTRAN (UMTS Terrestrial Radio Access Network) and the CN (Core Network) is

a. lur interface

b. lub interface

c. None of these

d. lu interface

Question 8
Complete
Marked out of 1.00

The 5G technology uses

a. Millimeter wave

b. Microwave

c. None of these

d. Infrared wave

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4/21/23,7:.01 PM Quiz3_CS/IT 314_21-04-2023_3.00 PM to 3.15 PM: Attempt review

Question 9
Complete
Marked out of 1.00

Packet Spoofing is a type of

a. None of these
b. Active attack
c. Passive attack

Question 10
Complete
Marked out of 1.00

A base station (BS) is transmitting with a power of 75 watt at frequency f: = 915 MHz, the distance between the BS and the receiver mobile
unit is 50 m. Calculate the power received in dBm by the mobile unit considering free space propagation, where both the transmitting and
receiving antenna has unit gain.

a. None of these
b.~16.89 dBm
c. 16.89 dBm

d.2.046 x 102 dBm

Question 11
Complete
Marked out of 1.00

Which of the following is a Transport layer attack?

a. Blackhole attack
b. SYN flooding attack
¢ Malicious code attack
d. Byzantine attack

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4/21/23,7:.01 PM Quiz3_CS/IT 314_21-04-2023_3.00 PM to 3.15 PM: Attempt review

Question 12
Complete
Marked out of 1.00

In Low Energy Adaptive Clustering Hierarchy protocol, the communication between the nodes and the cluster head node is done using

a. TDMA
b. SDMA
c. CDMA

d. FDMA

Question 13
Complete
Marked out of 1.00

Which among the following is the least strong security encryption standard for wireless networks?

a. Wired Equivalent Privacy (WEP)

b. Wi-Fi Protected Access (WPA)
¢. Wi-Fi Protected Access 3 (WPA3)
d. Wi-Fi Protected Access 2 (WPA2)

Question 14
Complete
Marked out of 1.00

An Radio Frequency Identifier (RFID) reader, consists of how many components?

a.One

b. Two

c. Three

d. Four

hitps://betamoodle.iitvadodara.ac.infmod/quizireview.php?atiempt=109240&cmi 5/6
4121123, 7:01 PM Quiz3_CS/IT 314_21-04-2023_3.00 PM to 3.15 PM: Attempt review

In MACA protocol, which of the following packet avoids hidden terminal problem

a. None of these
b. RTS (request to send)
c. ACK
d. CTS (clear to send)

~ Announcements

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Dashboard / Courses / Winter 2021-22 / Blech Semester 6 / Program Elective Ill / CS/T314 / General

/ Quiz Lab1 25.03.2022 4.25PM to 4.35 PM

Started on Friday, 25 March 2022, 4:25 PM

State Finished
Completed on Friday, 25 March 2022, 4:33 PM
Time taken 8 mins 5 secs
Marks 3.00/5.00
Grade 6.00 out of 10.00 (60%)

Question 1
Complete

Mark 0.00 out of 1.00

Which of the statement is wrong among the following

3 UTMS networks has a packet switched element.

b. None of these

° UTMS networks has a circuit switched element.

eas:
The correct answer is:
UTMS networks has both circuit and packet switched element.
Question 2
Complete

Mark 0.00 out of 1.00

For a roaming user who is visiting a new MSC, the IMSI (International Mobile Subscriber Identity) will be temporarily stored in ............0

a.
None of these

“ AUC (Authentication Center)

d. HLR (Home Location Register)

The correct answer is:

VLR (Visitor Location Register)

Question 3
Complete

Mark 1.00 out of 1.00

Which of the following statement is incorrect

4: In soft handoff, the existing connection with the Base station (BS) must be broken before establishing a connection with a new BS

b. In hard handoff, the mobile unit simultaneously remain connected to more than one Base station (BS).

“ In hard handoff, the existing connection with the Base station (BS) must be broken before establishing a connection with a new BS

d. In soft handoff, a new connection is established before the old one is released.

The correct answer is:

In hard handoff, the mobile unit simultaneously remain connected to more than one Base station (BS).
Question 4
Complete

Mark 1.00 out of 1.00

Which one is not a characteristics of a coherence bandwidth channel?

4 Nonlinear phase response

b. Linear phase response

© Channel bandwidth is greater than the bandwidth of the transmitted signal

d. Equal gain over all frequencies

The correct answer is:

Nonlinear phase response

Question 5
Complete

Mark 1.00 out of 1.00

Which of the following statement is incorrect

a. In QPSE (Quadrature Phase Shift Keying), the maximum transition between two symbols
yields to a phase shift of +180°

b. In 7 QPSK (Quadrature Phase Shift Keying), the maximum transition between two symbols
yields to a phase shift of 135°

c. In BPSE (Quadrature Phase Shift Keying), the maximum transition between two symbols
yields to a phase shift of +180°

d. In OQPSE (Quadrature Phase Shift Keying), the maximum transition between two symbols
yields to a phase shift of 135°

The correct answer is:

In OQPSK (Quadrature Phase Shift Keying), the maximum transition between two symbols
yields to a phase shift of +135°

~~ Quiz_Lab2_02.04.2022_12.10 PM to 12.20 PM

Jump to...

Mid-Semester Exam_CS/IT 314_11-03-2022_2.30 PM to 3.30 PM =

Dashboard / Courses / Winter 2021-22 / Blech Semester 6 / Program Elective Ill / CS/T314 / General

/ Quiz Lab2 02.04.2022 12.10 PM to 12.20 PM

Started on Saturday, 2 April 2022, 12:10 PM

State Finished
Completed on Saturday, 2 April 2022, 12:19 PM
Time taken 9 mins 29 secs
Marks 3.00/5.00
Grade 6.00 out of 10.00 (60%)

Question 1
Complete

Mark 0.00 out of 1.00

SS7 (Signalling System No. 7) protocol supports the interface between

3 BTS and BSC

c. MS and BTS

d. None of these

The correct answer is:

BSC and MSC
Question 2
Complete

Mark 1.00 out of 1.00

Which of the following statement is incorrect

2 OFDM (Orthogonal Frequency Division Multiplexing) provides a high spectral efficiency and data rate.

b. None of these

© In OFDM (Orthogonal Frequency Division Multiplexing), the PARP (Peak to average power ratio) is less.

d. In OFDM (Orthogonal Frequency Division Multiplexing), the ICI (Inter-carrier-Interference) and ISI (Inter-Symbol-Interference) problem
is less.

The correct answer is:

In OFDM (Orthogonal Frequency Division Multiplexing), the PARP (Peak to average power ratio) is less.

Question 3
Complete

Mark 1.00 out of 1.00

Which one among the following statement is wrong

9 In both circuit and packet switching networks, billing is based on the amount of transmitted data.

b. In packet switching network, billing is based on the amount of transmitted data.

c. In circuit switching network, billing is based on the duration of the connection.

dq. GPRS is a packet switching network

The correct answer is:

In both circuit and packet switching networks, billing is based on the amount of transmitted data.
Question 4
Complete

Mark 1.00 out of 1.00

The bandwidth of each ARFCN (Absolute Radio Frequency Channel Number) channel and number of subscriber supported by each channel is

3 None of these

b. 250 KHz, 8 users

c, 25 MHz, 6 users

dq. 200 KHz, 8 users

The correct answer is:

200 KHz, 8 users

Question 5
Complete

Mark 0.00 out of 1.00

The uplink and downlink frequency channels of GSM are separated by

a. 25 MHz

c. 50 MHz

d. None of these

The correct answer is:

45 MHz

~ Quiz_Lab3_18.04.2022_12.35 PM to 12.40 PM

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Quiz_Lab1_25.03.2022_4.25PM to 4.35 PM =
Dashboard / Courses / Winter 2021-22 / Blech Semester 6 / Program Elective Ill / CS/T314 / General

/ Quiz Lab4 21.04.2022 4.15 PM to 4.20 PM

Started on Thursday, 21 April 2022, 4:16 PM

State Finished
Completed on Thursday, 21 April 2022, 4:21 PM
Time taken 5 mins
Marks 4.00/5.00
Grade 8.00 out of 10.00 (80%)

Question 1
Complete

Mark 0.00 out of 1.00

Which layer in the protocol stack is targeted for jamming attack?

a. Application Layer

b. Transport Layer

d. Network Layer

The correct answer is:

MAC Layer

Question 2
Complete

Mark 1.00 out of 1.00

The barcodes needs Line of Sight (LoS) communication to be scanned by the barcode reader?

a. True

b. False

The correct answer is:

True
Question 3
Complete

Mark 1.00 out of 1.00

Wireless networks are same as computer networks, that uses radio frequency channels as their
communication.

a. CDMA

b. TDMA

c. Media access control

d. Physical media

The correct answer is:

Physical media

Question 4
Complete

Mark 1.00 out of 1.00

An Radio Frequency Identifier (RFID) reader, consists of how many components?

a. Two

b. One

c. Three

d. Four

The correct answer is:

Three

Question 5
Complete

Mark 1.00 out of 1.00

Which layer of the protocol stack is targeted for wormhole attack?

a. Transport Layer

b. MAC Layer

c. Network Layer

d. Application Layer

The correct answer is:

Network Layer
Jump to...

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Dashboard / Courses / Winter 2021-22 / Blech Semester 6 / Program Elective Ill / CS/T314 / General

/ Quiz Lab5 28.04.2022 4.40 PM to 4.45 PM

Started on Thursday, 28 April 2022, 4:40 PM

State Finished
Completed on Thursday, 28 April 2022, 4:45 PM
Time taken 5 mins 1 sec
Marks 5.00/5.00
Grade 10.00 out of 10.00 (100%)

Question 1
Complete

Mark 1.00 out of 1.00

A transceiver module in a wireless sensor network contains which component internally?

a. Antennas

b. None of these

c. Electrodes

d. Wires

The correct answer is:

Antennas

Question 2
Complete

Mark 1.00 out of 1.00

Optical communication needs line of sight for communication between transmitter and receiver.

a. True

b. False

The correct answer is:

True
Question 3
Complete

Mark 1.00 out of 1.00

Sound Navigation and Ranging (SONAR) technology uses for communication.

a. LASER

b. Microwaves

c. Ultrasonic waves

d. Infrared waves

The correct answer is:

Ultrasonic waves

Question 4
Complete

Mark 1.00 out of 1.00

The major constraint in a mobile sensor network (MSN)

4 Bandwidth Management

b. Mobility Management

Power Management

d.
Heterogeneity

The correct answer is:

Mobility Management
Question 5
Complete

Mark 1.00 out of 1.00

SYN flooding is an layer attack.

a. Network

b. Transport

c. Data Link

d. Application

The correct answer is:

Transport

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Dashboard / Courses / Winter 2021-22 / Blech Semester 6 / Program Elective Ill / CS/T314 / General

/ Quiz Lab6 02.05.2022 1.00 PM to 1.05 PM

Started on Monday, 2 May 2022, 1:00 PM

State Finished
Completed on Monday, 2 May 2022, 1:05 PM
Time taken 5 mins 1 sec
Marks 3.00/5.00
Grade 6.00 out of 10.00 (60%)

Question 1
Complete

Mark 1.00 out of 1.00

Which among them has the strongest wireless security?

a. WPA3 (Wi-Fi Protected Access 3)

b. WPA2 (Wi-Fi Protected Access 2)

c. WPA (Wi-Fi Protected Access)

d. WEP (Wireless Equivalent Privacy)

The correct answer is:

WPA3 (Wi-Fi Protected Access 3)

Question 2
Complete

Mark 1.00 out of 1.00

Among the following statements which one is incorrect

a. Cellular networks are based on distributed routing and Adhoc networks are based on centralized routing.

b. High cost and time of deployment (cellular network) and Quick and cost-effective deployment (MANET)

c. None of these

d. Cellular networks are based on reuse of frequency spectrum through geographical channel reuse

The correct answer is:

Cellular networks are based on distributed routing and Adhoc networks are based on centralized routing.
Question 3
Complete

Mark 0.00 out of 1.00

In a GPRS network, Serving GPRS Support Node is the equivalent of system in GSM.

a. VLR

b. BSC

d. AuC

The correct answer is:

MSC

Question 4
Complete

Mark 0.00 out of 1.00

A universal Mobile Telecommunication System (UMTS) is a network,

b. 2.5G

c. 2G

d.4G

The correct answer is:

3G

Question 5
Complete

Mark 1.00 out of 1.00

Universal Mobile Telecommunications System (UMTS) is based on multiple access technique.

a. SDMA

b. TDMA

c. FDMA

d. CDMA

The correct answer is:

CDMA

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Announcements =
Dashboard / Courses / Winter 2021-22 / Blech Semester 6 / Program Elective Ill / CS/T314 / General

/ Mid-Semester Exam CS/IT 314 11-03-2022 2.30 PM to 3.30 PM

Started on Friday, 11 March 2022, 2:30 PM

State Finished
Completed on _ Friday, 11 March 2022, 3:30 PM
Time taken 1 hour
Marks 22.00/32.00
Grade 27.50 out of 40.00 (69%)

Question 1
Complete

Mark 1.00 out of 1.00

In the link design analysis the power received path loss is not a function of

a. Distance between the transmitter and receiver

b. Antenna Gain

c. None of these

d. Transmitter power

The correct answer is:

None of these

Question 2
Complete

Mark 0.00 out of 1.00

In a wireless communication channel, a change in frequency of a EM signal causes due to

@ Multipath effect

b. Shadowing

° Reflection

The correct answer is:

Doppler shift
Question 3
Complete

Mark 1.00 out of 1.00

What is full form of UMTS?

a. Universal Mobile Telecommunication Server

b. Universal Mobile Telephonic System

c. Universal Mobile Telephonic Server

d. Universal Mobile Telecommunications System

The correct answer is:

Universal Mobile Telecommunications System

Question 4
Complete

Mark 1.00 out of 1.00

Among the following which is not a part of Base Station Subsystem (BSS)

a. Mobile Switching Centre (MSC)

b. Base Station Controller (BSC)

c. Base Transceiver Station (BTS)

d. Mobile Station (MS)

The correct answer is:

Mobile Switching Centre (MSC)

Question 5
Complete

Mark 1.00 out of 1.00

The frequency range of IEEE 802.11b standard is

a. 2.4 GHz

b. 5 Gbps

c. 5 GHz

d. 2.4 Gbps

The correct answer is:

2.4 GHz
Question 6
Complete

Mark 0.00 out of 1.00

Relation between system capacity (C) of a cellular system with frequency reuse factor (Q) and distance between co-channel cells (R)

b. R increases, Q increases and € decreases

R decreases, Q increases and C increases

d. R increases, Q decreases and C increases

The correct answer is:

R increases, Q increases and C increases

Question 7
Complete

Mark 1.00 out of 1.00

A network of five mobile phones for data sharing is created using Bluetooth, what is the operating frequency of this network

a. 2.4 GHz

b. 5 GHz

c. None of these

d. 200 MHz

The correct answer is:

2.4 GHz
Question 8
Complete

Mark 0.00 out of 1.00

Among them which one is not a multicarrier modulation technique

a. GFDM (Generalized Frequency Division Multiplexing)

b. OFDM (Orthogonal Frequency Division Multiplexing)

c. None of these

A
The correct answer is:
CDMA (Code Division Multiple Access)

Question 9
Complete

Mark 1.00 out of 1.00

Determine the signal-to-interference ratio (SIR) in dB, for path

loss n = 3, and i=1,j =1. There are 9 co-channel cells in
cellular system.
a. 5.3 dB
S = (sqrt (3N)^n / io
b. 3.0 dB io = co-channel cell

“45 dB

d.4.0 dB

The correct answer is:

3.0 dB
Question 10
Complete

Mark 0.00 out of 1.00

Which of the statement is incorrect among the following

b. The PCU (Packet Control Unit) in GPRS directs only the packet switched data to GPRS network.

c. None of these

d. The PCU (Packet Control Unit) in GPRS directs the circuit switched data to GPRS network and packet switched data to standard GSM
network.

The correct answer is:

The PCU (Packet Control Unit) in GPRS directs the circuit switched data to standard GSM network and packet switched data to GPRS network.

Question 11
Complete

Mark 1.00 out of 1.00

In the link design analysis, the received power is not a function of

a. Antenna gain

b. Path loss

© Doppler shift

dq. Transmitter power

The correct answer is:

Doppler shift
 Question 12
Complete

Mark 0.00 out of 1.00

The uplink and downlink frequency bands of cellular GSM system are

a. Uplink 1710-1785 MHz, Downlink 1805-1880 MHz

b. None of these

| © 6 Uplink 890-915 MHz, Downlink $35-960 MHz

d. Uplink 935-960 MHz, Downlink 890-915 MHz

The correct answer is:

Uplink 890-915 MHz, Downlink 935-960 MHz

Question 13
Complete

Mark 1.00 out of 1.00

Which of the following statement is incorrect about microcell zone concept?

4 Reduced interference

b. No loss in trunking efficiency

©: More number of handoffs

dq. Increase in capacity

The correct answer is:

More number of handoffs
Question 14
Complete

Mark 1.00 out of 1.00

A spectrum of 60 MHz is allocated to a wireless cellular system

which uses 50 KHz of duplex channel for communication. For
cluster size N = 7 and replication factor M = 4, calculate the total
capacity offered by the cellular system.
a. 4200 S = Total duplex channels:
60 MHz / 50 kHz = 1200
b. 4400

c. 4800 System capacity = C = MS

d. None of these

The correct answer is:

4800

Question 15
Complete

Mark 1.00 out of 1.00

For a roaming user who is visiting a new MSC, the IMSI (International Mobile Subscriber Identity) will be temporarily stored in ............0

a. HLR (Home Location Register)

b. VLR (Visitor Location Register)

c. None of these

d. AUC (Authentication Center)

The correct answer is:

VLR (Visitor Location Register)
Question 16
Complete

Mark 0.00 out of 1.00

The uplink and downlink frequency channels of GSM are separated by

a. 50 MHz

b. 25 MHz

d. None of these

The correct answer is:

45 MHz

Question 17
Complete

Mark 0.00 out of 1.00

Which of the statement is incorrect among the following

b. None of these

° UTMS networks has a circuit switched element.

d. UTMS networks has a circuit switched element.

The correct answer is:

UTMS networks has both circuit and packet switched element.
Question 18
Complete

Mark 1.00 out of 1.00

Among the three basic modulation schemes which yields the minimum probability of error.

4. All of these have the same probability of error

b. BPSK (Binary Phase Shift Keying)

c. BFSK (Binary Frequency Shift Keying)

d. BASK (Binary Amplitude Shift Keying)

The correct answer is:

BPSK (Binary Phase Shift Keying)

Question 19
Complete

Mark 1.00 out of 1.00

GPRS (General Packet Radio Service) is an example of

a1G

b.2.5G

c.2G

d.3G

The correct answer is:

2.5G
Question 20
Complete

Mark 1.00 out of 1.00

Which of the following statement is incorrect

a. In OFDM (Orthogonal Frequency Division Multiplexing), the PARP (Peak to average power ratio) is less.

b. In OFDM (Orthogonal Frequency Division Multiplexing), the ICI (Inter-carrier-Interference) and ISI (Inter-Symbol-Interference) problem
is less.

c. None of these

d. OFDM (Orthogonal Frequency Division Multiplexing) provides a high spectral efficiency and data rate.

The correct answer is:

In OFDM (Orthogonal Frequency Division Multiplexing), the PARP (Peak to average power ratio) is less.

Question 21
Complete

Mark 1.00 out of 1.00

Find the value of frequency reuse factor Q of a cellular system

fort =0,j = 2

4 458

Reuse factor = sqrt (3*N)

b. 3 46 additional:
= D / r , r= cell radius
D = distance between centre of two c-channel.
c. 5.75

q. 6.25

The correct answer is:

3.46
Question 22
Complete

Mark 1.00 out of 1.00

Among the following which is not a part of Network Switching Subsystem (NSS)

4. Authentication Center (AUC)

b. Mobile Switching Centre (MSC)

©: Base Transceiver Station (BTS)

d. Operation Support Subsystem (OSS)

The correct answer is:

Base Transceiver Station (BTS)

Question 23
Complete

Mark 0.00 out of 1.00

The number of sensor nodes in an Adhoc network is more than in a Wireless Sensor Network

b. True

The correct answer is:

False
Question 24
Complete

Mark 1.00 out of 1.00

Which of the following statement is incorrect?

9 In soft handoff, the existing connection with the Base Station (BS) must be broken before establishing a connection with a new BS.

b. In soft handoff, a new connection is established before the old one is released.

“ In hard handoff, the existing connection with the Base Station (BS) must be broken before establishing a connection with a new BS.

d. In hard handoff, the mobile unit simultaneously remain connected to more than one Base Station (BS).

The correct answer is:

In hard handoff, the mobile unit simultaneously remain connected to more than one Base Station (BS).

Question 25
Complete

Mark 1.00 out of 1.00

A base station (BS) is transmitting with a power of 25 watt at frequency f, = 900 M,

the distance between the BS and the receiver mobile unit is 50 m. Calculate the pov
received in dBm by the mobile unit considering free space propagation, where both
transmitting and receiving antenna has unit gain.
a. -24.53 dBm
lambda = c/f
P = Pt * Gt * Gr * lambda^2 = 3 * 10^8 / 900 * 10^6 = 0.333
b. +21.53 dBm
--------------------------------
c. -21.53 dBm
(4*pie)^2 * d^2 * L
P = 7.04 * 10^-6 W L = system loss = 1
d. +24.53 dBm
P recieved = P in dbW as given watt in que

Pr (dBm) = 10 * log Pr (mW) m = milli

The correct answer is:
for converting 7.04 * 10^-6 W to milli watt *10^3
-21.53 dBm

Therefore, Pr =10 * log 7.04 * 10^-3 = -21.52 dBm

Question 26
Complete

Mark 0.00 out of 1.00

The Adhoc network is a centralized type of network

b. True

The correct answer is:

False

Question 27
Complete

Mark 1.00 out of 1.00

In OFDM (Orthogonal Frequency Division Multiplexing), a set of different subcarriers overlapping in frequency domain. However, these
subcarriers are

* designed to be in +180° phase shift with each

other.
> designed to be in +135° phase shift with each
other.
« designed to be in +90° phase shift with each other
d. None of these

The correct answer is:

designed to be in +90° phase shift with each other

Question 28
Complete

Mark 1.00 out of 1.00

If a user is in a voice call and also want to use his/her data connection uninterruptedly then which network will be preferred

a. LTE

b. VoLTE

c. None of these

The correct answer is:

VoLTE
Question 29
Complete

Mark 1.00 out of 1.00

In a dense urban environment, path loss exponent n = 4.5 and there are six number of ¢
channel cells in cellular system. The minimum required signal to interference G) ratio
13 dB. Determine the smallest cluster size needed to maintain this minimum required (-
a4

b.3

a5

d.2

The correct answer is:

3

Question 30
Complete

Mark 1.00 out of 1.00

Determine the capacity of a cellular system, with cluster size N =

7 where each cell is allocated a group of 60 channels and
replication factor M = 4.
a. None of these
C=MNk
b. 1680

c. 1600

d. 1480

The correct answer is:

1680
Question 31
Complete

Mark 1.00 out of 1.00

Determine the distance between nearest co-channel cells of a

cellular system for 1 = 1,7 = 2 and cell radius 2 m

4459

b. 946

c. 7.75

q. 10.00

The correct answer is:

9.16

Question 32
Complete

Mark 0.00 out of 1.00

The relationship between coherence time and coherence bandwidth is

ar _ 1
Cc Bw2

ion

T. = BW
d. None of these

The correct answer is:

ee!
Cc Bw

~ Quiz_Lab1_25.03.2022_4.25PM to 4.35 PM

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Dashboard / My courses / CS/IT314 2023 / General / End-Semester Exam _CS/IT 314 04-05-2023 2.00 PM to 3.30 PM

Started on Thursday, 4 May 2023, 2:02 PM

State Finished
Completed on Thursday, 4 May 2023, 2:47 PM
Time taken 45 mins 2 secs
Grade 36.00 out of 60.00 (60%)

Question 1 Which of the following statement is incorrect

Complete

Mark 0.00 out of

1.00
a. None of these

b. In OQPSK ( Offset Quadrature Phase Shift Keying), the maximum transition

between two symbols yields to a phase shift of +90°
C.

d. In QPSK (Quadrature Phase Shift Keying), the maximum transition between two
symbols yields to a phase shift of +180°

Question 2 Among them which one is not a multicarrier modulation technique

Complete

Mark 0.00 out of © a. CDMA (Code Division Multiple Access)

1.00
b. None of these

c. FDM (Frequency Division Multiplexing)

d. OFDM (Orthogonal Frequency Division Multiplexing)

Question 3 The barcodes needs Line of Sight (LoS) communication to be scanned by the barcode reader?
Complete

Mark 0.00 out of a. False

1.00

Question 4 The wireless Adhoc network is a centralized type of network

Complete

Mark 0.00 out of ate

1.00
b. True

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 5 Low energy Adaptive Clustering Hierarchy (LEACH) is _based protocol.

Complete

Mark 1.00 out of a. Area

1.00
b. Data

c. Clustering

d. Star

Question 6 The data rate of DPSK (Differential Phase Shift Keying) is higher than BPSK (Binary Phase Shift Keying)
Complete

Mark 0.00 out of a. True

1.00

Question 7 What is the use of an Radio Frequency Identifier module?

Complete

Mark 0.00 out of © a. Object Indentitication

1.00
b. To monitor temperature

c. To provide 3G Connectivity

d. To measure the Wi-Fi strength

Question 8 What is a cluster in cellular system?

Complete

Mark 1.00 out of a. A large group of mobile systems

1.00
b. A group of cells

c. Asmall geographic area

d. A group of subscribers

Question 9 Which among them has the strongest wireless security?

Complete

Mark 1.00 out of a. WEP (Wireless Equivalent Privacy)

1.00
b. WPA (Wi-Fi Protected Access)

c. WPA2 (Wi-Fi Protected Access 2)

cd. WPA3 (Wi-Fi Protected Access 3)

Question 10 Delay Spread is a phenomenon occurs in

Complete

Mark 0.00 out of a. Frequency domain

1.00
b. None of these

c. Both frequency and time domain

https://betamoodle.iiitvadodara.ac.in/mod/quiz/review.php ?attempt=111200&cmid=3696 &showall=1 2114

12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 11 Which one of the following statement is correct?

Complete In hidden terminal problem,
Mark 0.00 out of
1.00

b. Two sender nodes are in the communication range of each other

c. Hidden terminal problem is independent of node's communication range

d. None of these

Question 12 The UMTS is based on ___ multiple access technique.

Complete

Mark 1.00 out of a. SDMA

1.00
b. CDMA

c. FDMA

d. TDMA

Question 13 The major constraint in a mobile sensor network (MSN) _ |

Complete

_ 0.00 out of @. Mobility Management

b. Power Management

‘Heterogeneity

d. Bandwidth Management

Question 14 Why the shape of cell in a cellular system is hexagonal not circle?
Complete

1.00
b. Complex design

c. None of these

d. Omni directionality

Question 15 The different types of Wireless Sensor Networks are _

Complete

Mark 1.00 out of a. All of these

1.00
b. Underwater Sensor Networks

c. Terrestrial Sensor Networks

d. Underground Sensor Networks

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 16 The data rate of BPSK (Binary Phase Shift Keying) is higher than QPSK (Quadrature Phase Shift Keying)
Complete

Mark 1.00 out of a. True

1.00
b. False

Question 17 Which layer of the protocol stack is targeted for wormhole attack?
Complete

Mark 1.00 out of a. Transport Layer

1.00
b. Application Layer

c. MAC Layer

d. Network Layer

Question 18 . . . . .
complet In a wireless communication channel, a change in frequency of a EM signal causes due to
omplete

Mark 0.00 out of

1.00
4. Reflection

b. Shadowing

d. Multipath effect

Question 19 . . , . .
Compl A base station (BS) is transmitting with a power of 75 watt at frequency f. = 915 MHz, the distance between the BS and the
omplete
receiver mobile unit is 50 m. Calculate the power received in dBm by the mobile unit considering free space propagation,
Mark 7.00 out of where the transmitting antenna has a unit gain and receiving antenna gain is 2 cB.
1.00

a. -16.89 dBm

b. 16.89 dBm

© 43.979 dBm

d. 13.279 dBm

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 20 Which of the following statement is incorrect about microcell zone concept?
Complete

Mark 0.00 out of a. Increase in capacity

1.00

c. Reduced interference

d. No loss in trunking efficiency

Question 21 Among the three basic modulation schemes which yields the minimum probability of error.
Complete

Mark 1.00 out of a. BFSK (Binary Frequency Shift Keying)

1.00

b. BPSK (Binary Phase Shift Keying)

c. BASK (Binary Amplitude Shift Keying)

d. All of these have the same probability of error

Question 22
The relationship between coherence time (t,) and Doppler spread (Ds) is
Complete

Mark 1.00 out of

1.00

T.=D,

b.
1
T =_- —_
c D,

‘ T TT
1
c D2

d. None of these

Question 23 Which layer in the protocol stack is targeted for jamming attack?
Complete

Mark 1.00 out of a. Transport Layer

1.00

b. Network Layer

c. MAC Layer

d. Application Layer

Question 24 Which of the following is not a component of UTRAN?

Complete

Mark 0.00 out of

1.00

b. Radio Network Controller

c. Serving GPRS Support Node

d. Node B

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 25 Optical communication needs line of sight for communication between transmitter and receiver.
Complete

Mark 1.00 out of a. None of these

1.00
b. True

c. False

Question 26 . . . . .
Complete Determine the signal-to-interference ratio (SIR) in dB, for path loss n = 3, and
Mark 0.00 out of There are 9 co-channel cells in cellular system.
1.00

953 dB
SIR = (1/ 6 ) * (D/r)^n

D5 dB

d.4 dB

Question 27 In UMTS architecture, the interface between the Node B and RNC (Radio Network Controller) is
Complete

Mark 1.00 out of a. lub interface

1.00
b. None of these

c. lu interface

d. lur interface

Question 28 Which one of the following is not a characteristic of ADHOC network?

Complete

Mark 1.00 out of a. Fixed infrastructure

1.00
b. No fixed infrastructure

c. Dynamic changing topology

d. Energy-constrained

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Question 29 " .
complete Determine the distance between nearest co-channel cells of a cellular system fo1
Mark 0.00 out of and cell radius 2 m
1.00

4.59

© 775m

“10.00 m

Question 30 Which layer in the protocol stack is targeted for Denial of service attack?
Complete

Mark 1.00 out of a. Application Layer

1.00
b. Transport Layer

c. Network Layer

d. Multi Layer

Question 31 In Orthogonal Frequency Division Multiplexing, the guard interval is provided to

Complete

Mark 1.00 out of a. To eliminate Inter Symbol Interference (ISI)

1.00
b. To maintain orthogonality

c. To attain high symbol rate

d. None of these

Question 32 The interface between an mobile user and its nearest base transceiver station is
Complete

Mark 1.00 out of a. Air Interface

1.00
b. A Interface

c. Abis Interface

d. None of these

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 33 A sensor node can be used to

Complete

ve 1.00 out of 4 monitor biological or chemical hazards to provide early warnings

b. All of these

© monitor conditions and movements of wild animals or plants in wildlife habitats

d. monitor air quality and track environmental pollutants, wildfires or other natural or man-made disasters

Question 34 . .
compete In a dense urban environment, path loss exponent n = 4.5 and there are six nu
Mark 1.00 out of channel cells in cellular system. The minimum required signal to interference
1.00
13 dB. Determine the smallest cluster size needed to maintain this minimum re
a.3
13 = 10 log (S/I) S/I = 19.95
1.3 = log S/I
b.5 for taking antilog of 1.3
in cal:
c.2 1.3 and then press 10^x

d.4

Question 35 Which one of the following statement is correct?

Complete

Mark 0.00 out of a. In Mobile IP, users changes it address to care-of-address while roaming
1.00

c. Mobile IP don't allows users to keep the same IP address while roaming

d. None of these

Question 36 Which of the following statement is incorrect

Complete

Mark 0.00 out of a. None of these

1.00
b. In OFDM (Orthogonal Frequency Division Multiplexing), the ICI (Inter-carrier-Interference) and ISI (Inter-Symbol-
Interference) problem is less.

~ © c MMFDM (Orthogonal Frequency Dison Mullen) the PARP (eak ta average powerratio) isles.
d. OFDM (Orthogonal Frequency Division Multiplexing) provides a high spectral efficiency and data rate.

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Question 37 Which one of the following statement is incorrect?

Complete Session Initiation Protocol
Mark 1.00 out of

1.00 a. controls multimedia sessions on internet

b. is a transport layer protocol, for maintaining end-to-end sessions between sender and receiver

c. is responsible to maintain, control and terminate the session of one or more than one multimedia session

d. None of these

Question 38 A Bluetooth enabled wireless device supports

Complete

Mark 1.00 out of a. point-to-multipoint communication

1.00
b. None of these

c. both point-to-point and point-to-multipoint communication

d. point-to-point communication

Question 39 In a cellular system, the capacity of the system is directly proportional to

Complete

Mark 1.00 out of a. Number of Base stations

1.00
b. None of these

c. Number of cells

d. Number of times a cluster is replicated

Question 40 In a MACA protocol, a neighbor node near the receiver upon hearing the CTS (clear to send) packet
Complete

Mark 1.00 out of a. All of these

1.00
b. may initiates its data transmission process as per the requirement

c. will send RTS (request to send) packet to the transmitter/sender

d. will refrain from its transmission till the receiver receives the entire data packet

Question 41 In a single sensor module, which one among the following is an optional unit
Complete

Mark 1.00 out of a. Processing unit

1.00
b. Power supply unit

c. Memory unit

d. Sensing unit

e. Location finder or GPS

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Question 42 Which of the following layers provides end-to-end connectivity in a loT network?
Complete

Mark 0.00 out of © a. Transport Layer

1.00

b. Data Link Layer

c. Network Layer

d. Physical Layer

Question 43 Due to higher frequency the 5G connectivity is not great as the frequency waves are only able to travel a short distance.
Complete

Mark 1.00 out of a. True

1.00
b. False

Question 44 Which of the statement is correct among the following

Complete

Mark 1.00 out of a. UMTS networks has a circuit switched element.

1.00
b. None of these

c. UMTS networks has both circuit and packet switched element.

d. UMTS networks has a packet switched element.

Question 45 Which of the following is not a types of Spoofing?

Complete

Mark 0.00 out of a. Email Spoofing

1.00 :

c. Website Spoofing

d. IP Spoofing

Question 46 . :
The energy source used in wireless sensor nodes are
Complete

Mark 1.00 out of a. DC Battery

1.00 ,
b. Inverter

c. None of these

d. Capacitor

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Question 47
To avoid cell dragging which parameters has to carefully handled
Complete

Mark 0.00 out of

1.00

a. Transmitting power of Base Station (BS)

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©. Distance between the BS and the mobile unit

d. Handoff threshold

Question 48 The bandwidth of each ARFCN (Absolute Radio Frequency Channel Number) channel and number of subscriber supported
Complete by each channel is
Mark 0.00 out of
1.00 a. None of these

b. 250 KHz, 8 users

d. 25 MHz, 6 users

Question 49 SYN flooding is an __ layer attack.

Complete

Mark 1.00 out of a. Transport

1.00
b. Data Link

c. Application

d. Network

Question 50 The network security requirement needed for industrial purposes is of

Complete

Mark 1.00 out of a. Level 0

1.00
b. Level 3

c. Level 2

d. Level 1

Question 51 In cellular system, neighboring stations are assigned different group of channels to
Complete

Mark 1.00 out of a. maximize capacity of each cell

1.00
b. minimize interference

c. maximize throughput

d. minimize area coverage

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12/31/23, 5:37 PM End-Semester Exam_CS/IT 314_04-05-2023_2.00 PM to 3.30 PM: Attempt review

Question 52 SS7 (Signaling System No. 7) protocol supports the interface between
Complete

Mark 0.00 out of a. None of these

1.00
b. MS and BTS

d. BTS and BSC

Question 53 An unauthorized access of information from a wireless device through a Bluetooth connection is called a
Complete

Mark 1.00 out of a. Blueprint

1.00
b. Bluesnarfing

c. None of these

d. Bluestring

Question 54 The interface between the UTRAN (UMTS Terrestrial Radio Access Network) and the CN (Core Network) is
Complete

Mark 1.00 out of a. None of these

1.00
b. lu interface

c. lur interface

d. lub interface

Question 55 A program written in Arduino IDE is called __

Complete

Mark 1.00 out of a. IDE source

1.00
b. Sketch

c. None of these

d. Source code

Question 56 The Radio Frequency Identifier tag needs Line of Sight (LoS) communication to be scanned by the Radio Frequency
Complete Identifier reader?
Mark 1.00 out of
1.00 a. True

“=>

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Question 57
Which of the following is a collection of multiple separate networks?
Complete

Mark 0.00 out of

1.00
a. Personal Area Networks

b. Metropolitan area network

d. Local Area Networks

Question 58 Why is a cyclic prefix required in Orthogonal Frequency Division Multiplexing?

Complete

Mark 1.00 out of a. To help overcome Inter Symbol Interference (ISI)

1.00
b. To maintain orthogonality

c. None of these

d. To ensure symbol time is an integer number

Question 59 The frequency range of IEEE 802.11b standard is

Complete

Mark 1.00 out of a. 5 GHz

1.00
b. 2.4 GHz

c. 2.4 Gbps

d. 5 Gbps

Question 60 . soa .
The frequency range for satellite communication is
Complete

Mark 0.00 out of

1.00 Hz to 30

b. 100 KHz to 10 MHz

© 1 KHz to 100 KHz

d. 9 MHz to 30 MHz

~ Announcements Jump to...

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