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Consider the following statements regarding the slow start phase of the TCP congestion control algorithm. Note that cwnd stands for the TCP congestion window and MSS window denotes the Maximum Segments Size:

  1. The cwnd increases by 2 MSS on every successful acknowledgment
  2. The cwnd approximately doubles on every successful acknowledgment
  3. The cwnd increases by 1 MSS every round trip time
  4. The cwnd approximately doubles every round trip time

Which one of the following is correct?

  a. Only ii and iii are true

  b .Only i and iii are true

  c. Only iv is true 

  d. Only i and iv are true

The answer is given as c. But i want to know why statement (ii) is false

 

 

 

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Each time an ACK is received by the sender, the congestion window is increased by 1 MSS and cnwd increase double on  every RRT

Ans  c

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