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

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

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

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

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

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

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

7. Converting digital signal to analogic called:

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

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

10. It is 48 bit MAC, permanent address.

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

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

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

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

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

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

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

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

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

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

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

22. Loss of signal energy is called:

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

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

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

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

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

28. Communication system is made up of:

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

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

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

32. Signals used by computer are the:

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

34. Both Physical and Logical addresses are:

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

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

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

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

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

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

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

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

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

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

45. Wired Media is also called:

46. Collection of raw facts and figures is called: