Data Communication Questions and Answers updated daily – Computer Knowledge



311 Data Communication Questions and answers section with explanation for various online exam preparation, various interviews, Computer Knowledge Data Communication online test. Data Communication Questions with detailed description, explanation will help you to master the topic.

Data Communication Questions

1. The technique of temporarily delaying outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called



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Correct Ans:piggybacking
Explanation:


2. Which one of the following is a data link protocol?



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Correct Ans:all of the mentioned
Explanation:


3. CRC stands for



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Correct Ans:cyclic redundancy check
Explanation:


4. When 2 or more bits in a data unit has been changed during the transmission, the error is called



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Correct Ans:burst error
Explanation:


5. Automatic repeat request error management mechanism is provided by



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Correct Ans:logical link control sublayer
Explanation:


6. Header of a frame generally contains



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Correct Ans:all of the mentioned
Explanation:


7. Which sublayer of the data link layer performs data link functions that depend upon the type of medium?



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Correct Ans:media access control sublayer
Explanation:


8. Which one of the following task is not done by data link layer?



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Correct Ans:channel coding
Explanation:


9. The data link layer takes the packets from _____ and encapsulates them into frames for transmission.



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Correct Ans:network layer
Explanation:


10. In communication satellite, multiple repeaters are known as



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Correct Ans:transponders
Explanation:


11. Which utility is an all-purpose tool for troubleshooting TCP/IP problems?



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Correct Ans:PING
Explanation:


12. Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?



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Correct Ans:two bits or any even number of bits inverted in a byte during transmission
Explanation:


13. IEEE project 802 divides the data link layer into an upper _____ sublayer and a lower _____ sublayer.



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Correct Ans:LLC, MAC
Explanation:


14. A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?



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Correct Ans:Communications software
Explanation:


15. With an IP address of 201.142.23.12, what is your default subnet mask?



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Correct Ans:255.255.255.0
Explanation:


16. The frequency range : 300 kHz to 3 MHz is used for



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Correct Ans:AM radio transmission
Explanation:


17. Networks where end user workstations are tied to LAN servers to share resources and application processing



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Correct Ans:Client/Server networks
Explanation:


18. Which of the following TCP/IP protocol is used for remote terminal connection service?



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Correct Ans:TELNET
Explanation:


19. The core diameter of a single-mode fibers is about



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Correct Ans:10 times the wavelength of the light carried in the fiber
Explanation:


20. Which of the following device is used with an X.25 network to provide service to asynchronous terminals



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Correct Ans:Packet assembler/disassemble
Explanation:





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