Telecommunications

Question 1

Communication

Answer 1

The word ‘communication’ means sending and receiving data between two individuals or amongst many people.

Question 2

What is a data communication system

Answer 2

Telecommunications system is a system of transmission of sounds, images, texts or data in the form of electronic signals.

Question 3

What is data

Answer 3

It refers to the raw facts to be communicated

Question 4

What is protocol

Answer 4

This is a set of rules that are followed by the sender and the receiver to
make communication possible.

Question 5

What is simplex mode of telecommunication

Answer 5

In this mode, transmission can take place in only one direction.

Question 6

What is half duplex mode of telecommunication

Answer 6

In this mode, data can be transmitted to both directions, but only to one direction at a time.

Question 7

What is full duplex mode of transmission

Answer 7

This mode allows simultaneous transmission of data to both directions.

Question 8

What is bandwidth

Answer 8

Bandwidth is a term which is used to describe the data handling capacity of a communication system.

Question 9

Guided/bounded media

Answer 9

Bounded media are the physical links through which signals are confined to a narrow path.

Question 10

Unguided/wireless media

Answer 10

Unbounded/Unguided media or wireless media do not use any physical connectors between the two communicating devices.

Question 11

Digital modem

Answer 11

Receives microwaves and converts them into digital signals.

Question 12

Antenna

Answer 12

An antenna transmits and receives the microwave signals.

Question 13

What is a computer network

Answer 13

A computer network means two or more computers connected to each other to share data, hardware, software and other resources.

Question 14

Advantages of a computer network

Answer 14

Communication made by a computer network is very cheap.
Computers in a network system share different software packages.

Question 15

Disadvantages of computer network

Answer 15

Network failure may cause loss of data

The system is open to hackers

Question 16

Server

Answer 16

A server is the main computer that provides services, data and other resource to other computers in the network environment.

Question 17

Workstation

Answer 17

Workstation is a computer where the client works.

Question 18

NIC

Answer 18

Network Interface Card

Question 19

BNC

Answer 19

Bayonet Neil concelman

Question 20

Hub

Answer 20

A hub is a device with multiple points or ports. It acts as a central point from where different computers and other devices are connected. It also amplifies the signals and sends them to all connected devices.

Question 21

Repeater

Answer 21

A repeater is a device that amplifies the incoming signals, creates a new copy of it and transmits the signals on the network.

Question 22

Bridge

Answer 22

A bridge is a device that connects two or more similar types of networks.

Question 23

Router

Answer 23

A router is an intelligent device that connects two different networks. Like a bridge, a router also filters and forwards information among different networks.

Question 24

Gateway

Answer 24

connects two Gateway dissimilar networks.

Question 25

Modem

Answer 25

the MODEM receives analog signals from a phone line and converts them into digital signals for the computer.

Question 26

LAN

Answer 26

A local area network (LAN) is a network of computers and other devices that are relatively near to each other and are connected in a way that enables them to communicate by cables and a small wireless device.

Question 27

MAN

Answer 27

A metropolitan area network (MAN) is a network of computers which is spread over a metropolitan area such as within a city. It connects two or more LAN together.

Question 28

WAN

Answer 28

A wide area network (WAN) is a network RouiCk system of connecting two or more computers generally across a wide geographical area such as cities, districts, and Ethernet Ring Network countries.

Question 29

Intranet

Answer 29

An intranet is a private network that can only be accessed by authorized users.

Question 30

Extranet

Answer 30

An extranet is a private network that allows access of data, information from outside for specific business or educational purposes.

Question 31

What is Network topologies

Answer 31

The arrangement or connection pattern of computers or nodes and other devices of the network is known as network topology.

Question 32

Bus topology

Answer 32

In a bus topology computers and other devices are arranged in a linear format

Question 33

Ring topology

Answer 33

In a ring topology computers are connected in the shape of a circle without any end point.

Question 34

Star topology

Answer 34

In a star topology all computers or network devices are connected through a central device called hub or switch.

Question 35

Centralized computing network

Answer 35

In the centralized computing network, the main computer is called host computer here the workstations don’t have any processing power.

Question 36

The client server network

Answer 36

The client server network consists at least one server and 2 or more clients.

Question 37

Peer to peer network

Answer 37

Peer to peer network is a group of computers which function both as servers and workstations to share data information.

Question 38

ARPA

Answer 38

Advanced Research Project Agency