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#
Authors:
James F. Kurose, Keith W. Ross
Chapter:
Transport Layer
Exercise:
Problems
Question:7 | ISBN:9780132856201 | Edition: 6

Question

In protocol rdt3.0, the ACK packets flowing from the receiver to the sender do not have sequence numbers (although they do have an ACK field that contains the sequence number of the packet they are acknowledging). Why is it that our ACK packets do not require sequence numbers?

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Answer

The protocol rtd3.0 is used to transfer data from sender to receiver.

  • If a sender transfer the packet to the receiver, then receiver will receive and send ACK(Acknowledgement) to the sender for conformation.
  • If sender received ACK then go to the next level.
  • In this process, needs sequence number to the sender for finding duplicate packets data or ACK data.
  • If the sender find any duplicate ACK, then ignore it. In this process ACK packets does not require sequence number.

 

So, ACK packets does not require sequence numbers.

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Dr siraj rathore said that: Bata Lun Phuy Chaur.

Post the discussion to improve the above solution.