slow start phase self doubt

Question

when no of RTT  is asked ,

i am confused when will start from 1   AND  when will start from 2

rest part i known  folow until thresold size and then increse with given MSS

LET SUPPOSE THRESOLD 20

FOR EX :::    1 2 4 8 16 20 22 24 26

     OR            2 4 8 16 20 22 24 26

in ex 1 no of rtt is  9  while in ex 2   no of rtt is 8

 

can anyone tell me when we will start 1 and when we will start with 2

Answer 1

Check for the MSS given if it is not mentioned take 1 as default otherwise take the mentioned one.

Like refer this problem :- https://gateoverflow.in/1794/Gate-cse-2014-set-1-question-27 it is mentioned MSS = 2KB so we start from that size only.

Comments

and what happened if the given AIMD/MIMD  formate 

what is the use of AIMD AND MIMD

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AIMD is Additive Increase Multiplicative decrease it is the algorithm that is widely popular for congestion control it is same what we have learnt that window size will increase linearly if congestion is not detected and it will reduce to half if congestion is detected.

I don’t think GATE has ever asked about MIMD