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

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

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

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

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

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

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

7. Sometimes, signals traveling through transmission media lose their quality This phenomenon is called:

8. It is 48 bit MAC, permanent address.

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

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

11. If you are an electrical or electronic engineer, you should join:

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

13. Converting digital signal to analogic called:

14. Continuously varying signals or waves that change with time period are called:

15. Signals used by computer are the:

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

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

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

19. Collection of raw facts and figures is called:

20. The human voice is example of an/a: