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السؤال 341

In an ARQ mode, what is meant by a NAK response to a transmitted packet?

  1. Request retransmission of the packetالإجابة الصحيحة
  2. Packet was received without error
  3. Receiving station connected and ready for transmissions
  4. Entire file received correctly

الشرح

NAK is the negative acknowledgement: it reports that the received block failed its error check, so the sending station must transmit that packet again.

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