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

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

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

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

4. Converting digital signal to analogic called:

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

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

7. This computer network can spread across an entire city, college campus, or a small region.

8. Communication system is made up of:

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

10. Signals used by computer are the:

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

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

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

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

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

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

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

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

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

20. It is also called Wired or Bounded transmission media.