TRANSPORT LAYER
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the below statements is false? Round Trip Time in the real world changes over time because
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packets may take different routes
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network load can change over time
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packets can be unnecessarily retransmitted
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round trip time is an estimate
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Explanation:
Detailed explanation-1: -On the initial packet sequence, there is a timer called Retransmission Timeout (RTO) that has an initial value of three seconds. After each retransmission the value of the RTO is doubled and the computer will retry up to three times.
Detailed explanation-2: -A retransmission timer is started for the segment when it is placed on the queue. Thus, every segment is at some point placed in this queue. The queue is kept sorted by the time remaining in the retransmission timer, so the TCP software can keep track of which timers have the least time remaining before they expire.
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