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Consider the two 16-bit words (shown in binary) below. Recall that to compute the Internet checksum of a set of 16-bit words,Consider the figure below in which TCP a sender and receiver communicate over a connection in which the sender-to-receiver seWHAT IS THE ANWER FOR THE TWO QUESTIONS

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Answer #1

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Answer:

The initial value of sender to receiver sequence number = 115

Size of segments = 582 bytes

Solution for (a):

The sequence number for the first segment = 115

Sequence number for the second segment = 115+582 = 697

Sequence number for the first segment = 582+697 = 1279

Solution for (b):

  • Acknowledgement for first segment = 697
  • Again, Acknowledgement for first segment = 1279
  • As the Second segment last in the path, so, there is no Acknowledgement for this segment.
  • Acknowledgment actually indicates the number of next sequence receiver want.

If Acknowledgement = n

  • Then, it indicates that segment up to sequence NO-(n-1) Received and now it won’t segment with sequence

NO = n

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