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

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

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

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

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

5. It is 48 bit MAC, permanent address.

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

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

8. Collection of raw facts and figures is called:

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

10. Signals used by computer are the:

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

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

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

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

15. Both Physical and Logical addresses are:

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

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 32 bit IP address. It is temporary.

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

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

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

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

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

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

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

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

27. Converting digital signal to analogic called:

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

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

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

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

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

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

34. Communication system is made up of:

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

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

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

38. Wired Media is also called:

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

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

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

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

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

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

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

46. Loss of signal energy is called: