Unit 4 – Networking

 Exercise 1
1. A modem : d. modulates and demodulates the data into a digital or an analog
signal
2. A repeater : f. sends the digital signal further on in the network
3. A bridge : g. connects networks and sends packages of data between them
4. A router : h. connects networks that use the same protocol
5. A gateway : a. is an entrance to another network
6. A switch : b. channels incoming data but maintains the bandwidth speed.
7. A hub : e. channels incoming data but shares the bandwidth among the
devices present on a network
8. A wireless access point : c. allows wireless devices to connect to the network
 Exercise 2
1. Who are the users?
Answer : Doctors, receptionist, practice manager
2. What kind of hardware is used?
Answer : PC and printer
3. What do the doctors use it for?
Answer : to records or see patients history
4. What do the receptionists use it for?
Answer : to records patients’ datas, drugs’ information, and appointment
5. What does the practice manager use it for?
Answer : to manage finance of the hospital
 Exercise 3
1. What is a network?
Answer : a group or system of interconected two or more PC
2. What are its hardware components?
Answer : hardware is the collection of physical parts of a computer system that
has shape and size and it can be feel
3. What is the difference between a local area network and wide area network?
Answer : LAN is a network that covers a small geographical area such as
homes, offices, and group of buildings. WAN is a network that covers larger
geographical areas that can span the globe.
4. What advantages do you think networks have?
Answer : Enchances communication and availability of information, allows for
more convenient resource sharing, makes file sharing easier.
 Exercise 4
1. LANs link computers and other devices that are placed in the same building (close)
2. In a client-server architecture, pear-to-pear have the same capabilities.
3. The word protocol refers to the standard of communication
4. Routers are used to link a LAN to another network
5. Access points do need to be connected to a wired LAN to build a WLAN
6. Wireless adapters aren’t optional when you are using WLAN. Its installed in your
computer to link it to the network.
7. Hotspots are available for public use in places
8. The Internet is an example of a WAN
 9. Wireless WANs use mobile telephone networks
 Exercise 5
1. All the PCs on a LAN are connected to one server, which is a powerful PC with a
large hard disk that can be shared by everyone.
2. The style of peer-to-peer networking permits each user to share resources such as
printers.
3. The star is a topology for a computer network in which one computer occupies the
central part and the remaining nodes are linked solely to it.
4. At present Wi-Fi systems transmit data at much more than 100 times the rate of a
dial-up modem, making it an ideal technology for linking computers to one another
and to the Net in a WLAN.
5. All of the fiber-optic backbones of the United States, Canada, and Latin America
cross Panama.
6. A hub joins multiple computers (or other network devices) together to form a single
network segment, where all computers can communicate directly with each other
 Exercise 6
1. Should
2. LAN
3. Equipment
4. WAN
5. Recommend
6. Remote
7. VPN
8. Internet
 Exercise 7
1. Ring
2. Star
3. Mesh
4. Bus
 Exercise 9
1. Ring
2. Bus, Star, Mesh
3. Ring, Bus, Star
4. Ring, Bus, Star, Tree
5. Ring, Bus
6. Star, Mesh
 Exercise 11
1. If she needs a computer, her brother will gave her his computer.
2. If she does not read the Computer Networking module and her notes, she will not
pass the test.
3. If they do not invite me to the computer workshop, I will not go.
4. The administration staff will accept his thesis draft if Rama turn in his thesis draft on
time
5. If you want a remote access to your company’s LAN, you have to set up a Virtual
Private Network.
 6.If Anugrah needs to connect devices over a small area, he may need to set up a
LAN.
 Exercise 12
1. G = If you place a floppy disk near a magnet, you will destroy the data
2. E = If you press print screen, you will copy the screen
3. F = If you input the correct password, you will have access to the network
4. H = If you add memory to a computer, it will runs faster
5. A = If you move the mouse to the left, the cursor will move to the left
6. C = If you store data in RAM, It is will not lost when you switch off
7. I = If you use a faster modem, your phone bills will be lower
8. B = If there is a memory fault, the computer will hang
9. J = If you press the arrow key, the cursor will move accross the screen
10. D = If you move a CD-ROM drive with the disk in place, you will damage the
drive