Gate2020 cs Q64

64Consider a TCP connection between a client and a server with the following specifications: the round trip time is 6 ms, the size of the receiver advert window is 50 KB, slow-start threshold at the client is 32 KB, and the maximum segment size is 2 KB. The connection is established at time t = Assume that there are no timeouts and errors during transmission. Then the size of the congestion window (in KB) at time t + 60 ms after all acknowledgments processed is _______.

Note – Numerical Type question

Option : B
Explanation :
TCP connections at t = 0
1MSS = 2KB Threshold = 32KB (slow start)
RTT = 6ms. Then how big packet it (packet size) may deliver after t + 60 ms

1 RTT = 6 ms
⇒ 10 RTT = 60 ms
t + 60 = 0 + 60 = 60 ms
At 60 ms, CWND = 22 MSS
1 MSS = 2KB
⇒ 22 MSS = 22 × 22 = 44 KB

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