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

1. Signals used by computer are the:

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

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

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

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

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

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

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

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

10. Both Physical and Logical addresses are:

11. Collection of raw facts and figures is called:

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

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

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

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

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

17. Communication system is made up of:

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

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

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

21. It is 48 bit MAC, permanent address.

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

23. Twisted-pair cable, coaxial cable, radio waves are examples 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. Loss of signal energy is called:

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

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

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

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

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

31. Wired Media is also called:

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

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

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

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

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

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

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

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

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

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

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

43. Converting digital signal to analogic called:

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

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

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