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      Question

      The unit of communication at the data link layer is a

      .......................,,,,,,,,,,,,,
      A bit Correct Answer Incorrect Answer
      B frame Correct Answer Incorrect Answer
      C datagram Correct Answer Incorrect Answer
      D packet Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      A frame is "the unit of transmission in a link layerprotocol, and consists of a link layer header followed by a packet." A frame is a series of bits generally composed of frame synchronization bits, the packet payload, and a frame check sequence

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