Lesson 6 (Part 1): Computer Network and Telecommunications

Question 1

• It is a series of interconnected computers/devices where the interconnection is formed to share resources, data and applications in order to communicate between the computers/devices.

Answer 1

Computer Networks

Question 2

Five Basic Components of a Computer Network

Answer 2

Message
Sender
Receiver
Transmission Media
Protocol

Question 3

• is data or information that needs to be transmitted over a computer network from one device to another device.

Answer 3

Message

Question 4

is the computer that has the data and needs to transfer the data to another network- connected system.

Answer 4

Sender

Question 5

• The computer that awaits data from other devices on the network is a _______.

Answer 5

Receiver

Question 6

We need a communication medium such as wires, cables, radio waves etc. to transfer data from one device to another device.

Answer 6

Transmission Media

Question 7

It is a set of rules agreed by both the sender and the receiver, two devices can be connected to each other without a _______ but cannot communicate.

Answer 7

Protocol

Question 8

Features of a Computer Network

Answer 8

Perfomance
Data sharing
Back up
Software and hardware compatibility
Reliability
Security
Scalability

Question 9

Two Computer Network Architecture

Answer 9

Peer to Peer Architecture
Client server architecture

Question 10

It explains how to link computers to obtain the full benefits of a computer network, such as better response time, safety, scalability, etc.

Answer 10

Computer Network Architecture

Question 11

All computers in a computer network are linked to another computer in the network in a ______________. Every machine on the network uses the same resources as other machines. No central computer acts as a server, but all computers act as a server for the data stored in them.

Answer 11

Peer to Peer Architecture

Question 12

A central computer functions as a hub in the _______________ and serves all client computer requests. All shared data is stored on the

Answer 12

Client server architecture

Question 13

Three Network Topologies

Answer 13

The star network
The ring network
The bus network

Question 14

is powered by one central computer that communicates with and via all other computers. Since this enables central planning and control, a very stable central computer and lots of cables are needed.

Answer 14

The star network

Question 15

it consists of a continuous loop with all computers attached. In a given direction, signals move and all computers have equal access to the data. The token ring is a particular variant of the ring network whereby a special code, the token, is passed around the ring.

Answer 15

The ring network

Question 16

It is the most common configuration currently. A central data cable is used, to which it is possible to connect each computer (and other devices such as printers and routers). While bottlenecks can occur, its popularity stems from its inherent robustness: without disrupting the rest of the network, devices can be added or removed.

Answer 16

The bus network

Question 17

Four Types of Computer Networks

Answer 17

Personal Area Network(PAN)
Local Area Network(LAN)
Metropolitan Area Network(MAN)
Wide Area Network(WAN)

Question 18

It is a network of computers that links computers/devices within an individual’s range.

Answer 18

Personal Area Network(PAN)

Question 19

It is a network in which computers, such as inside the same office or building, are relatively close together.

Answer 19

Local Area Network(LAN)

Question 20

• It is a smaller network than a traditional WAN, but larger than a LAN. A ______ usually connects two or more LANs within the same area, but they are far enough apart that a simple cable or wireless link will not connect the networks.

Answer 20

Metropolitan Area Network(MAN)

Question 21

It is a network covering a wide geographical area, such as a whole city or nation, or even a whole world. Usually, ______ are used to connect two or more LANs that are relatively far apart.

Answer 21

Wide Area Network(WAN)