TCP segment carries octets 4321 through 4371. The next segment carries no data. What is that segment's sequence number?
A) 4321
B) 4371
C) 4372
D) None of the above.

Question

Quizplus · Accepted Answer

TCP segments are numbered based on byte streams, not individual octets. The sequence number of a segment is the byte number of the first data octet in that segment. Therefore, the sequence number of the next segment will be the next byte after the last byte of the previous segment, which is 4372.

TCP Segment Carries Octets 4321 Through 4371