1. (5x2 pts) In what mode do we start TCP? Slow Start a. Congestion Avoidance Fa

Question

1. (5x2 pts) In what mode do we start TCP? Slow Start a. Congestion Avoidance Fast Recovery b. In which mode of window growth do we grow the window size exponentially? Slow Start Congestion Avoidance Fast Recovery When a packet is lost, which protocol always returns to a w?ndow size of one? TCP Vegas c. TCP Reno TCP Tahoe TCP Regio d. What is the name of the variable that holds the value at which TCP converts fronm SS to CA? rwnd cwnd ssthresh Which protocol reduces the window size by 50% instead of all the way back to 1 when a triple-duplicate ACK occurs: TCP Vegas e. TCP Reno TCP Tahose TCP Regio

Explanation / Answer

a. TCP start in slow start mode

b. In slow start mode window size grows exponentially

c. Under TCP Tahoe, the congestion window is set to1 MSS and grows exponentially until it reaches the value of ssthresh, at which point it grows linearly.

d. Vaiable name is ssthresh .After reaching ssthresh slow start state(SS) convert/changes to congestion avoidence(CA)

e. TCP Reno is correct choice for this question

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