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

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

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

3. Communication system is made up of:

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

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

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

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

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

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

10. Signals used by computer are the:

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

12. It is 48 bit MAC, permanent address.

13. Collection of raw facts and figures is called:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

28. Wired Media is also called:

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

30. Converting digital signal to analogic called:

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

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

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

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

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

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

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

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

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

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

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

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

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

44. Loss of signal energy is called:

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

46. Both Physical and Logical addresses are: