Can someone help me answer this question? Consider a TCP connection has an initi

Question

Can someone help me answer this question?

Consider a TCP connection has an initial Threshold of 24 kB and a Maximum Segment size (MSS) of 4 kB. The receiver advertised window is 36 kB. Suppose all transmission attempts are successful except for a triple duplicate ACK received (for the same previously transmitted data) on the number 7 transmission and a timeout transmission number 12. The first transmission attempt is number 0. Find the size of the sender's congestion window for the first 18 transmission attempts (number 0-17) assuming the sender's TCP implementation is using the slow-start congestion control scheme.

Explanation / Answer

Attempt number Window Size
0 1
1 2
2 4
3 8
4 16
5 32
6 64 (reached thresold, will start linear increasing
7 65 (time out, new thresold= 64 mss)
8 1
9 2
10 4
11 8
12 16 (time out, new thresold = 8 mss)
13 1
14 2
15 4
16 8
17 16

16mss= 64kB.

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