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

1. Collection of raw facts and figures is called:

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

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

4. The physical layout in which computers are connected is called:

5. Signals used by computer are the:

6. This organization is concerned with the development of internet architecture and smooth operation of the internet.

7. For transmission, FM, AM radios, television and cordless phones use:

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

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

10. It is the channel or path through which the message is carried from sender to the receiver.

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

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

13. Unwanted signal that mixes lip with the original signal during the transmission of data is called:

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

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

16. It is 48 bit MAC, permanent address.

17. Wired Media is also called:

18. Twisted-pair cable, coaxial cable, radio waves are examples of:

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

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