1. Why TCP uses a 3-way connection establishment process rather than simple conn

Question

1. Why TCP uses a 3-way connection establishment process rather than simple connection request and response (2-way protocols)?

2. Assume TCP congestion control based on Reno/Tahoe protocol. Initial ssthreshold = 32.

a. First segment loss occurs at the 7th transmission. Loss is indicated by timeout. What is the current congestion window (CWND) and ssthreshold before the 8th transmission starts?

b. After 3 more transmissions (8th, 9th and 10th) at the 10th transmission, segment loss happens. This time, loss is indicated by 3-DUPACKs. What is the current congestion window (CWND) and ssthreshold before the 11th transmission starts?

c. After this 2 more transmissions happen (11th and 12th) without any loss and the transmission process is completed. What will be the current congestion window (CWND) and ssthreshold value after the 12th transmission?

Show your steps through X-Y plot.

Explanation / Answer

1.TCP is a protocol that can handle the data communciation
between the IP address network.
TCp is famous for 3 way connection and relatively complex
protocol.
It will sents request from http to web server.

2.

let us considerMSS size is 2KB i.e. every time 1MSS sent means 2 KB data is sent MSS by adding 1 or in terms of data adding 2KB


8th 5MSS

b.8th 5MSS

9th 6MSS

10th 7MSS

c.11th 10 MSS

12th 11 Mss

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