Data Communication and Networking

 1. The ...................is the path through data transmit.

      a. Protocol

      b. Medium

      c. Sender

      d. None of the above

ans--> Medium

2. The information to be transmitted in data communication system is called ..............

a. Protocol

b. Medium

c. Communication

d. Message

ans--->  Message

3. Radio broadcast system is an example of ................... transmission

a. Simplex

b. Half Duplex

c. Full Duplex

d. None of the above

ans---> Simplex

4. Communication between computer and monitor is .............transmission

a. Simplex

b. Full Duplex

c. Half Duplex

d. None of the above

ans----> Simplex

5. Walkie-Talkie communication is an example of ............transmission.

a. Simplex

b. Half Duplex

c. Full Duplex

d. None of the above

ans----> Half Duplex

6. .................transmission mode in which data can transmit in both direction at the same time

a. Simplex

b. Half Duplex

c. Full Duplex

d. None of the above

ans----> Full Duplex

7. Transmission mode in which capacity of transmission medium is shared all the time is ................

a. Simplex

b. Half Duplex

c. Full Duplex

d. None of the above

ans----> Full Duplex

8. Computer network within building, campus or nearby building is .........

a. LAN

b. MAN

c. WAN

d. PAN

ans-----> LAN

9. Computer network that span countries, continent or the whole world is 

a. LAN

b. MAN

c. WAN

d. PAN

ans----> WAN

10. Transmission medium that provides the physical conduct from one device to another is 

a. Guided

b. Unguided

c. Both A and B

d. None of the above

ans---> Guided

11. Wireless medium is also called ........medium.

a. Guided

b. Unguided

c. Unbounded

d. Both B and C

ans---> Both B and C

12. Transmission medium in which signal transmit in the form of light is .................

a. Twisted Pair Cable

b. Communication satellite

c. Coaxial Cable

d. Fiber Optic Cable

ans---> Fiber Optic Cable

13. .........cable can transmit data in higher rate than .......cable

a. Twisted  pair, coaxial

b. Coaxial; Fiber Optic

c. Coaxial;Twisted pair

d. Fiber Optic cable

ans--> Coaxial;Twisted Pair

14. .............media transmit the signal without using physical conductor.

a. Bounded

b. Unbounded

c. Unguided

d. Both B and C

ans---> Both B and C

15. The OSI model consists of ............ layers

a. 3

b. 5

c. 7

d. 9

ans---> 7

16. The .............layer is closest to transmission medium.

a. Physical

b. Data Link

c. Transport

d. Network

ans-->Physical

17. The end to end delivery of the entire message is the responsibility of ............ layer.

a. Data Link

b. Network

c. Transport

d. Network

ans---> Transport

18. The ......layer enables the user to across network.

a. Presentation

b. Session

c. Network.

d. Application

ans-----> Application

19. In fiber optics, the signal source is ..................

a. Radio Waves

b. Infrared waves

c. Light Waves

d. Very low frequency waves

ans----> Light Waves

20. Geosynchronous satellite complete one orbit in 

a. 1 hour

b. 1 day

c. 1 month

d. 1 year

ans----> 1 year

21. .......is a type of transmission impairment in which outside source such as crosstalk corrupts the signal.

a. Attenuation

b. Noise

c. Distortion

d. Decibel

ans----> Noise

22. ................is a loss of signal's energy due to resistance of the medium.

a. Attenuation

b. Noise

c. Distortion

d. Decibel

ans---->  Attenuation

23. ...............topology that use multipoint connection.

a. Star

b. Bus

c. Ring

d. Mesh

ans---> Bus

24. .........topology require hub or central controller.

a. Star

b. Bus

c. Ring

d. Mesh

ans---->  Star

25. Mesh topology with 6 node require.....cables.

a. 6

b. 10

c. 12

d. 15

ans---> 15

26. Topology that uses point to point connection

a. Star

b. Mesh

c. Ring

d. All of the above

ans---> All of the above

27. Size of IP address in IPv4 is ..............

a. 4 Bytes

b. 8 Bytes

c. 16 Bytes

d. None of the above

ans---> None of the above

28. Size of IP address in IPv4 is .......

a. 32 Bits

b. 64 Bits

c. 128 Bits

d. None of the above

ans---> 128 Bits

29. Size of subnet mask is 

a. 32 Bits

b. 64 Bits

c. 128 Bits

d. None of the above

ans---> 32 Bits

30. Size of MAC address is 

a. 32 Bits

b. 48 Bits

c. 64 Bits

d. 128 Bits

ans----> 48 Bits

31. Private LAN/MAN of an organization that is accessible to organizational users only is ....

a. Internet

b. Extranet

c. Intranet

d. All of the above

ans---> Intranet

32. Which one is remote login tool

a. LogMeIn

b. Team Viewer

c. SplashTop

d. All of the above

ans---> Team Viewer

33. .........regenerate an incoming signal before retransmitting it

a. HUB

b. Modem

c. Repeater

d. Router

ans----> Repeater

34. Wi-Fi uses...............gigahertz radio bands.

a. 2.4

b. 5

c. Both A and B

d. None of the above

ans----> Both A and B

35. ...................command Verifies IP level connectivity to another TCP/IP computer by sending Internet Control Message Protocol(ICMP) echo Request messages.

a. IPconfig

b. Ping

c. Both A and B

d. None of the above

ans---> Ping

36. .......................command is used to display the basic TCP/IP configuration for all adapters.

a. IPconfig

b. Ping

c. Both A and B

d. None of the above

ans--->IPconfig

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