Data Communication and Computer Networks – Online MCQs Test – Computer Science 9th

1. The text, numbers, symbols, images, voice and video which are processed by computers and digital devices are called:

2. The rules and procedures on which computers exchange data on network are called:

3. It has the ability of sending and receiving signals that allows computers to share information with each other.

4. Both Physical and Logical addresses are:

5. It is used for long distance transmission of data and covers a larger geographical area like cities, provinces or even countries.

6. Radio-waves, microwaves and infrared are examples of:

7. Change in the shape of signal between sender and receiver is called:

8. It is an agreement between two parties or venders, using communication devices.

9. It is a networking device that connects computers and other devices.

10. It is a 32 bit IP address. It is temporary.

11. It is a group of computer and peripheral devices which are connected in a limited area such as school, laboratory, home and office building.

12. The topology in which all computers are connected to a central device called hub is:

13. It is a wireless or physical path between the sender and receiver through which data is sent and received from one place In another.

14. If computers and other devices are connected with a single cable, it is called:

15. This model divides a communication system into seven abstraction layers.

16. It means change in the shape of the signal.

17. In optical fiber or fiber-optic cable data is transferred in the form of:

18. The loss of energy in transmission signal refers to:

19. It is the rate at which data is transferred and normally measured in bits per second.

20. An electrical signal that is converted into a pattern of bits to represent a sequence of discrete values, at any given time is called: