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20 July, 08:26

Using 5 bit sequence numbers what is the maximum size ofof send and recieve window for the following protocols

1-stop and wait arq

2-go back n arq

3-selective repeat arq

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Answers (1)
  1. 20 July, 09:18
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    1 - Stop and wait protocol is also called as a one-bit sliding window protocol. The maximum size of the sender and receiver window is 1.

    2 - The maximum sender window size in go-back n is (2^n) - 1, n is the sequence number.

    = 2^5 - 1

    = 32-1

    = 31

    The maximum receiver window size is 1.

    3 - In selective repeat arq, the maximum window size is (2^n) / 2 where n is sequence number, the sequence number here is 5.

    so, 2^5/2

    = 32/2

    = 16
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