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

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

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

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

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

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

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

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

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

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

10. The number of bits used in an IPV 4 address are:

11. Loss of signal energy is called:

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

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

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

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

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

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

18. It is 48 bit MAC, permanent address.

19. Converting digital signal to analogic called:

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

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

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

23. Communication system is made up of:

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

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

26. Both Physical and Logical addresses are:

27. Collection of raw facts and figures is called:

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

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

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

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

32. Router determines data path to transfer data packets which is the:

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

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

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

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

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

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

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

40. Wired Media is also called:

41. Signals used by computer are the:

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

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

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

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

46. In this signals are transmitted in a narrow pathway using physical links.