Question 7824 – Computer-Networks
November 28, 2023Question 3676 – Data-Structures
November 28, 2023Question 7847 – Computer-Networks
Consider a long-lived TCP session with an end-to-end bandwidth of 1 Gbps (= 109 bits/second). The session starts with a sequence number of 1234. The minimum time (in seconds, rounded to the closest integer) before this sequence number can be used again is _________.
Correct Answer: B
Question 10 Explanation:
In TCP, Sequence number field is 32 bit, which means 232 sequence number per byte are possible. Whatever be the starting sequence number the possible number will be 232bytes
The process of using all the sequence number and repeating a previously used sequence number.
The time taken to wrap around is called wrap around time:
Minimum Time = Wrap around time = Total number of bits in sequence number / Bandwidth
= 232 * 8 / 109 = 34.35 == 34 (closest integer)
33
34
35
36
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