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Authors:
James F. Kurose, Keith W. Ross
Chapter:
Transport Layer
Exercise:
Review
Question:11 | ISBN:9780132856201 | Edition: 6

Question

Suppose that the roundtrip delay between sender and receiver is constant and known to the sender. Would a timer still be necessary in protocol rdt 3.0, assuming that packets can be lost? Explain.

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Answer

Yes, a timer still is necessary in protocol rdt 3.0.

Reason: Assume the packet is loss, the sender knows the round trip delay time.  It is used for estimate the transfer packet time.

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