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

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

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

3. It is a device that connects two or more networks.

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

5. Signals used by computer are the:

6. It is the aunt her of signals transmitted per second.

7. Wired Media is also called:

8. Radio-waves, microwaves and infrared are examples 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. The topology in which all computers are connected to a central device called hub is:

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

12. This organization is responsible for endorsing and coordinating the functions of the other standards organizations.

13. Signal-to-noise ratio is often expressed in:

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

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

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

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

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

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

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