HostA has established a TCP connection with HostB in a remote network. HostA is sending packets to HostB. Assume we have configured TCP, somehow, to ACK every segment (no ACKing every other segment). Assume that the timeout is the same for all packets. HostB's “window size" is 20000 bytes. HostB has already received and acknowledged everything sent by HostA's application up to and including byte #1,839. HostA now sends segments of the same application data stream in order: P: 486 bytes Q: 213 bytes

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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HostA has established a TCP connection with HostB in a remote network. HostA
is sending packets to HostB. Assume we have configured TCP, somehow, to ACK every
segment (no ACKing every other segment). Assume that the timeout is the same for all
packets. HostB's "window size" is 20000 bytes. HostB has already received and
acknowledged everything sent by HostA's application up to and including byte #1,839.
HostA now sends segments of the same application data stream in order:
P: 486 bytes
Q: 213 bytes
R: 407 bytes
Suppose the segments arrive at Host B in the order Q, P, and R. What is the
acknowledgment number on the segment sent in response to segment Q?
Transcribed Image Text:HostA has established a TCP connection with HostB in a remote network. HostA is sending packets to HostB. Assume we have configured TCP, somehow, to ACK every segment (no ACKing every other segment). Assume that the timeout is the same for all packets. HostB's "window size" is 20000 bytes. HostB has already received and acknowledged everything sent by HostA's application up to and including byte #1,839. HostA now sends segments of the same application data stream in order: P: 486 bytes Q: 213 bytes R: 407 bytes Suppose the segments arrive at Host B in the order Q, P, and R. What is the acknowledgment number on the segment sent in response to segment Q?
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