TRANSPORT LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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does not increase
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increases linearly
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increases quadratically
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increases exponentially
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Detailed explanation-1: -In the slow-start phase the window size starts from 1 and grows exponentially until it reaches the threshold. After it reaches the threshold, the congestion avoidance (additive increase) procedure allows the window size to increase linearly until a timeout occurs or the maximum window size is reached.
Detailed explanation-2: -Detailed Solution. The correct answer is option 2. In the congestion avoidance algorithm, the size of the congestion window increases Additively.
Detailed explanation-3: -Initially, sender sets congestion window size = Maximum Segment Size (1 MSS). After receiving each acknowledgment, sender increases the congestion window size by 1 MSS. In this phase, the size of congestion window increases exponentially.
Detailed explanation-4: -Slow start effectively increases the congestion window exponentially, rather than linearly. Specifically, the source starts out by setting CongestionWindow to one packet. When the ACK for this packet arrives, TCP adds 1 to CongestionWindow and then sends two packets.