What is Port in Networking ?
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What is Port in Networking ? Arora Educator
1) Used to identify the senders and
receivers of messages in computer
networking.
2) Ports deal in = 4th Layer in OSI Model =
Transport Layer
3) Each host can have = 65535 ports per IP
address
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Port Number of Various Protocols Arora Educator
1) FTP = File Transfer Protocol = 20/21
FTP = 21 = Connection between 2 computer
FTP = 20 = Transfer Data
2) SFTP = SSH (Secure Shell) File Transfer Protocol = 22
3) Telnet = 23
4) SMTP = Simple Mail Transfer Protocol = 25
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Port Number of Various Protocols Arora Educator
5) DNS = Domain Name System = 53
6) DHCP = Dynamic Host Configuration Protocol = 67/68
DHCP Server = 67 (Client Send to Server)
DHCP Client = 68 (Server Send to Client)
7) HTTP = Hypertext Transfer Protocol = 80
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Port Number of Various Protocols Arora Educator
8) POP3 = Post Office Protocol Version 3 = 110
9) IMAP = Internet Message Access Protocol = 143
10) IRC = Internet Relay Chat = 194
11) HTTPS (S = Secure) = 443
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Topic – Network Types
1) LAN – Local Area Network
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Topic – Network Types
1) LAN – Local Area Network
✓ Private Network
✓ Small Geographical Area
✓ Share Resources
✓ Data Transfer Speed = 10 Mbps to
1Gbps
✓ Devices = Hub/Switch
Topic – Network Types Arora Educator
1) LAN – Local Area Network
✓ High Security
✓ Range = 100 Mt – 2 Km
✓ Cable = Twisted Pair Cable / Coaxial Cable
✓ IEEE develop specification for LAN
✓ Types = Wired & Wireless
▪ Wired LAN = Cables = Ethernet = 802.3
▪ Wireless LAN = WIFI = 802.11
Topic – Network Types Arora Educator
2) MAN – Metropolitan Area Network
Topic – Network Types Arora Educator
2) MAN – Metropolitan Area Network
✓ Cover = City
✓ Create = Interconnecting 2 LAN (LAN + LAN = MAN)
✓ Cable = Fiber Optic Cable
✓ Example = Cable television network
✓ Devices = Hub/Switch , Routers/Bridge
✓ Less Security
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Topic – Network Types
3) WAN – Wide Area Network
Topic – Network Types Arora Educator
3) WAN – Wide Area Network
✓ WAN = Telecommunication Network
✓ Cover = Countries (Large Geographical Area)
✓ Internet is largest WAN
✓ Transmission medium = Satellite
✓ Device = Routers
✓ Less Security
✓ Firewall Required
✓ Example = Internet
Topic – Network Types Arora Educator
4) PAN – Personal Area Network
Topic – Network Types Arora Educator
4) PAN – Personal Area Network
✓ Bluetooth Enable Device
✓ Infrared Enabled Device
✓ Hotspot
✓ Wireless Keyboard & Mouse
✓ Bluetooth enabled headphones
✓ Wireless Printers
✓ TV remotes
✓ Range = 10 metres
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Topic – Network Types
LAN / MAN / WAN / PAN
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Topic – Network Types
5) SAN – Storage Area Network
SAN = Cloud Computing
Topic – Network Types Arora Educator
6) CAN – Campus Area Network
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Topic – Network Types
6) CAN – Campus Area Network
✓ A CAN is also known as a corporate
area network (CAN)
✓ Group of interconnected Local Area
Networks (LAN)
✓ Range = 1 to 5 km
Networking Types = Arora Educator
1) Internet = All can Access
2) Intranet = Only for Employees
3) Extranet = b/w 2 companies
Networking Modes = Arora Educator
1) Simplex = Keyboard - Monitor
2) Half Duplex = Walkie Talkie
3) Full Duplex = Mobile/Video Conferencing
Networking Cables = Guided Media Arora Educator
1) Twisted Pair Cable
➢ Shielded Twisted Pair (STP)= Used in Factory
➢ Unshielded Twisted pair (UTP) = LAN Connection
2) Co-Axial Cable = TV Cable
3) Fibre Optic Cable = Under Sea = Fastest =
Broadband Connection
Un-Guided Media Arora Educator
1) Radio Waves
2) Microwaves
3) Infrared Waves
Q. ___ is a passage to connect two network that may
work on different networking models.?
___ दो नेटवर्क र्ो जोड़ने र्ा मार्क है जो ववभिन्न
नेटवर्र्िंर् मॉडल पर र्ाम र्र सर्ता है Arora Educator
1) Hub
2) Switch
3) Gateway
4) Router
Q. ____ is also known as protocol convertor.?
____ र्ो प्रोटोर्ॉल र्न्वटक र र्े रूप में िी जाना जाता है
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1) Hub
2) Bridge
3) Switch
4) Gateway
Q. ____ are rules that exist at several levels in a
telecommunication connection.?
___ ऐसे ननयम हैं जो दरू संचार र्नेक्शन में र्ई स्तरों
पर मौजद ू हैं Arora Educator
1) Bandwidth
2) Network Surface Unit
3) Protocol
4) Domain Name
Q. Which of the following Internet Protocol specifies how data
is exchanged over the Internet and how it should be broken.?
ननम्नभलखित में से र्ौन सा इंटरनेट प्रोटोर्ॉल ननर्दक ष्ट र्रता है
र्र् इंटरनेट पर डेटा र्ा आदान-प्रदान र्ैसे र्र्या जाता है और
इसे र्ैसे तोड़ा जाना चार्हए
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1) PPP
2) HTTP
3) TCP
4) SMTP
Q. ___ is the bit rate of available or consumed information
capacity expressed typically in metric multiples of bits.?
___उपलब्ध या उपिोर् र्ी र्ई सच ू ना क्षमता र्ी बिट दर
आमतौर पर बिट्स र्े मीर्िर् र्ण ु र्ों में व्यक्त र्ी जाती है
Network bandwidth is Arora Educator
1) Frequency
commonly measured in =
2) Protocol
bits per second (bps)
3) Speed
4) Bandwidth
Q. Which of the following network device has the
slowest type of connection.?
ननम्नभलखित में से र्र्स नेटवर्क डडवाइस में सिसे धीमे
प्रर्ार र्ा र्नेक्शन है Arora Educator
1) DSL
2) Router
3) Dial-up modems
4) None Of The Above
Q. A device that is used to connect a number of LANs
is.?
एर् उपर्रण जजसर्ा उपयोर् र्ई LAN र्ो जोड़ने र्े भलए
र्र्या जाता है Arora Educator
1) Router
2) Repeater
3) Bridge
4) All of these
