Data communication

Question 1

What is Data Communication

Answer 1

The transmission of data from one location to another for direct use of for further processing

Question 2

Bandwidth

Answer 2

A bandwidth determines the volume of data that can be transmitted in a given time

Question 3

What are the three types of Bandwidth

Answer 3

Narrowband, voice-band, broadband

Question 4

Narrowband

Answer 4

This channel is almost obsoletefor example, a telegraph system, can transmit data at slow speeds of between 10 and 30 bits per second

Question 5

Voiceband

Answer 5

Can transmit data at the rate of up to 64 Kbps. A telephone line is a voiceband, and is one of the most widely used of methods of transferring data

Question 6

Broadband

Answer 6

Can transmit large volumes of data at speeds of over 8Mbps. Coaxial cables

Question 7

What is the name given to the medium that transmits data

Answer 7

A line

Question 8

Simplex

Answer 8

A line that permits data to flow in only one direction. (You can send and receive data but not both)

Question 9

Half-duplex

Answer 9

This line can alternately send and receive data. (This means that at any particular time, you can send data but not receive it, or receive data but not send it)

Question 10

Full-duplex

Answer 10

This line can simultaneously send and receive data.

Question 11

Network

Answer 11

A network is a group of two or more computers linked together so that they can share resources (hardware, software and data)and communicate with each other.

Question 12

What are the 5 groups of computer networks

Answer 12

LAN, WAN, Internet, Intranet, Extranet

Question 13

What is LAN

Answer 13

Local Area Network is a collection of microcomputers, such as in an office that can share peripherals, files and programs and communicate with each other on the network.

Question 14

What is a server

Answer 14

A server is a computer/device that provides a service to another computer and its user