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Host A and B are communicating over a TCP connection, and Host B has already received from A all bytes up through byte 1

Posted: Thu Jun 02, 2022 7:56 am
by answerhappygod
Host A and B are communicating over a TCP connection, and Host B
has already received from A all bytes up through byte 150. Suppose
Host A then sends two segments to Host B back-to-back. The first
and second segments contain 30 and 25 bytes of data, respectively.
In the first segment, the sequence number is 137, the source port
number is 302, and the destination port number is 55.
a. What is the seq number of the second segment from A to B?
b. If the first segment arrives before the second; what is the
acknowledgement (Ack) number from B?
c. If the second segment arrives before the first segment; what
is the acknowledgement (Ack) number from B?
d. In the acknowledgement of the first segment, what is the
source port number and destination port number?
2. What is SMTP?
3. What is ARP?
4. What is IP tunneling?