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Telecommunications Flashcards

1
Q

Communication

A

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

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2
Q

What is a data communication system

A

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

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3
Q

What is data

A

It refers to the raw facts to be communicated

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4
Q

What is protocol

A

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

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5
Q

What is simplex mode of telecommunication

A

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

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6
Q

What is half duplex mode of telecommunication

A

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

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7
Q

What is full duplex mode of transmission

A

This mode allows simultaneous transmission of data to both directions.

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8
Q

What is bandwidth

A

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

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9
Q

Guided/bounded media

A

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

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10
Q

Unguided/wireless media

A

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

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11
Q

Digital modem

A

Receives microwaves and converts them into digital signals.

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12
Q

Antenna

A

An antenna transmits and receives the microwave signals.

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13
Q

What is a computer network

A

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

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14
Q

Advantages of a computer network

A

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

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15
Q

Disadvantages of computer network

A

Network failure may cause loss of data

The system is open to hackers

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16
Q

Server

A

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

17
Q

Workstation

A

Workstation is a computer where the client works.

18
Q

NIC

A

Network Interface Card

19
Q

BNC

A

Bayonet Neil concelman

20
Q

Hub

A

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.

21
Q

Repeater

A

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

22
Q

Bridge

A

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

23
Q

Router

A

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

24
Q

Gateway

A

connects two Gateway dissimilar networks.

25
Q

Modem

A

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

26
Q

LAN

A

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.

27
Q

MAN

A

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.

28
Q

WAN

A

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.

29
Q

Intranet

A

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

30
Q

Extranet

A

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

31
Q

What is Network topologies

A

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

32
Q

Bus topology

A

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

33
Q

Ring topology

A

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

34
Q

Star topology

A

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

35
Q

Centralized computing network

A

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

36
Q

The client server network

A

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

37
Q

Peer to peer network

A

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

38
Q

ARPA

A

Advanced Research Project Agency

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