Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
Expert Solution & Answer
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Chapter 3, Problem P14P

Explanation of Solution

Case 1 “NAK-only protocol is not preferable”:

If the sender sends the packet irregularly, then the NAK is not only the preferred protocol. Hence it is better to use the protocol, which uses ACKs.

  • One of the major disadvantages of NAK only protocol is it can find whether the packet has been lost only when the next incoming packet is acknowledged by the receiver.
  • While the receiver analyzes the packet loss, it sends NAK to the sender. Finally the sender retransmits both the lost packet and next incoming packet...

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