Question

Consider the effect of using slow start on a line with a 10-msec round-trip time and no congestion. Assume the maximum segment size is 4KB and the threshold is set to 16KB initially in congestion control algorithm. How long does it take before a window of 24KB data can be sent at once

Answer 1

The answer is "60 msec".

Step-by-step explanation:

The first RTT sends a segment (or 4KB) for a slow start. Its second RTT dispatch two segments (or 8KB), the third four (or 16KB) segments, its fourth 8 segments (or 32KB) Now if it could only enhance information in linear terms (not exponential rate), it can only add 1 MSS that would be 4KB (5th RTT) and another 4KB (6th RTT), which would be total of 60 msec.