doubt

Question

#plz explain??

Comments

but answer given is C.........i think they given wrong

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No Ack=902.i refered it in the Kurose book.

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https://gateoverflow.in/93068/doubt#c93079 plz check this also

Answer 1

According to me ,amswer should be c

first of all for data transfer we need to establish a TCP connection

Now ,Tcp connection starts with SYN, which Does not carry any data but consumes one sequence number(refer to any stand.text book)

Now here suppose, SYN is going from H1 to H2, then One SEQ will for Syn and 300 for data so 602+301=903

and another sequence number should be 1541.assuming one packet transfered all the bytes

Comments

C will be answer when H1 send own data H2 sent own data and after than H2 send one more packet that contain only ACK for H1 packet. seq no = 2540 because no data is send and ACK no=903 because H2 recieved till 902

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@Uddipto please elaborate on this line

NO! it is 2540, after initial seq number, one seq for every data byte  is consumed ??

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They have't explicitely mentioned about packets! so i assumed, each byte as a packet. But in normal approach. it should be 1541