Data Communication Questions and Answers updated daily – Computer Knowledge



393 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. Working of the WAN generally involves?



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Correct Ans:All of above
Explanation:


2. Which of the following is used for modulation and demodulation?



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Correct Ans:Multiplexer
Explanation:


3. What is the other name of a LAN card?
 



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Correct Ans:NIC
Explanation:


4. In file transfer protocol, data transfer can be done in ______



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Correct Ans:all of the mentioned
Explanation:


5. In FTP protocol, client contacts server using ____ as the transport protocol.



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Correct Ans:transmission control protocol
Explanation:


6. Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits



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Correct Ans:96 to 127
Explanation:
Bits 96 to 127 in the datagram represents obfuscated 1Pv4 address.


7. Suppose two IPv6 nodes want to interoperate using IPv6 datagrams but are connected to each other by intervening IPv4 routers. The best solution here is



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Correct Ans:Tunneling
Explanation:


8. The ____ field determines the lifetime of IPv6 datagram



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Correct Ans:Hop limit
Explanation:
The Hop limit value is decremented by one by a router when the datagram is forwarded by the router. When the value becomes zero the datagram is discarded.


9. These are the features present in IPv4 but not in IPv6.



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Correct Ans:All of the mentioned
Explanation:


10. In the IPv6 header,the traffic class field is similar to which field in the IPv4 header?



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Correct Ans:ToS field
Explanation:


11. The header length of an IPv6 datagram is _____.



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Correct Ans:40 bytes
Explanation:
IPv6 datagram has fixed header length of 40 bytes, which results in faster processing of the datagram.


12. The size of IP address in IPv6 is



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Correct Ans:128 bits
Explanation:


13. Which field helps to check rearrangement of the fragments?



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Correct Ans:offset
Explanation:
offset field specifies where the fragment fits in the original datagram.


14. Fragmentation has following demerits



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Correct Ans:All of the mentioned
Explanation:
Fragmentation makes the implementation complex and also can create DOS attack


15. If the value in protocol field is 17, the transport layer protocol used is ____



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Correct Ans:UDP
Explanation:


16. The TTL field has value 10. How many routers (max) can process this datagram?



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Correct Ans:10
Explanation:
TTL field is decremented by one each time the datagram is processed by a router.


17. Which of the following field in IPv4 datagram is not related to fragmentation?



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Correct Ans:TOS
Explanation:


18. Which of the following is not applicable for IP?



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Correct Ans:Error reporting
Explanation:


19. Which of the following is present in both an HTTP request line and a status line?



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Correct Ans:HTTP version number
Explanation:


20. The conditional GET mechanism



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Correct Ans:Helps to keep a cache upto date
Explanation:





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