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 Networking Protocols interview questions  Networking Protocols Interview Questions
 Networking Administration interview questions  Networking Administration Interview Questions
 Networking Security interview questions  Networking Security Interview Questions
 Networking AllOther interview questions  Networking AllOther Interview Questions
Question
Data link protocols almost always put the CRC in a trailer
rather than in a header. Why?


 Question Submitted By :: Shiva Kumar
I also faced this Question!!     Rank Answer Posted By  
 
  Re: Data link protocols almost always put the CRC in a trailer rather than in a header. Why?
Answer
# 1
It is more efficient.  Only one pass needs to be made over the packet as it computes the CRC while scanning the packet, and then outputs it at the end (trailer).  If the CRC were in the header, then two passes would be necessary - one to compute the CRC, and one more to append it to the front of the packet.
 
Is This Answer Correct ?    0 Yes 0 No
Cade Bryant
 

 
 
 
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