in Computer Networks
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What layer of the OSI model is designed to perform error recovery functions?

  1. physical
  2. data link
  3. network
  4. transport
in Computer Networks
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2 Comments

B.DLL
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B and D
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1 Answer

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DLL is responsible for bit level frame error detection / correction / retransmission.

Transport layer is responsible for end-to-end delivery guaranty. 

Transport layer error control is a redundant necessary.

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@Debashish. I think end-to-end delivery guarantee for transport layer is only applicable for TCP protocol. But there may be other protocols as well like UDP which dont perform error recovery.

So, I think DLL is only the option.
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