Computers and Technology

Computers and Technology, 21.06.2019 22:50, prettybaby406

Explain why it is reasonable to assume that receiving 3 duplicate acks in tcp is an indication that the network is not currently congested.

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Computers and Technology, 18.10.2019 22:00, kandrews6221

Compare gbn, sr, and tcp (no delayed ack). assume that the timeout values for all three protocols are sufficiently long such that 5 consecutive data segments and their corresponding acks can be received (if not lost in the channel) by the receiving host (host b) and the sending host (host a) respectively. suppose host a sends 5 data segments to host b, and the 2nd segment (sent from a) is lost. in the end, all 5 data segments have been correctly received by host b. (i)-how many segments has host a sent in total and how many acks has host b sent in total? (ii)-what are their sequence numbers? (iii)-if the timeout values for all three protocol are much longer than 5 rtt, then which protocol successfully delivers all five data segments in shortest time interval? answer this question for all three protocols.

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Computers and Technology, 06.11.2019 20:31, oscarmendoza2107

Assume that the timeout values for all three protocols are sufficiently long such that 5 consecutive data segments and their corresponding acks can be received (if not lost in the channel) by the receiving host (b) and the sending host (a) respectively. suppose host a sends 5 data segments to host b, and the second segment (sent from a) is lost. in the end, all 5 data segments have been correctly received by host b. (a) how many segments has host a sent in total and how many acks has host b sent in total? what are their sequence number? answer this question for all three protocols. (b) if the timeout values for all three protocols are much longer than 5 rtt, then which protocol successfully delivers all five data segments in the shortest time interval?

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Engineering, 09.11.2019 04:31, ubdental

Compare gbn, sr, and tcp (no delayed ack). assume that the timeout values for all three protocols are sufficiently long such that 5 consecutive data segments and their corresponding acks can be received (if not lost in the channel) by the receiving host (b) and the sending host (a) respectively. suppose host a sends 5 data segments to host b, and the second segment (sent from a) is lost. in the end, all 5 data segments have been correctly received by host b. (a) how many segments has host a sent in total and how many acks has host b sent in total? what are their sequence number? answer this question for all three protocols. (b) if the timeout values for all three protocols are much longer than 5 rtt, then which protocol successfully delivers all five data segments in the shortest time interval?

Answers: 3

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Computers and Technology, 10.11.2019 05:31, arryahc

P36. in section 3.5.4, we saw that tcp waits until it has received three duplicate acks before performing a fast retransmit. why do you think the tcp designers chose not to perform a fast retransmit after the first duplicate ack for a segment is received?

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