Compare Selective Repeat and TCP (no delayed ACK). Assume that the timeout value

Question

Compare Selective Repeat 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 3^rd and 4^th segments (sent from A) are lost. In the end, all 5 data segments have been correctly received by Host B. With Selective Repeat, how many segments has Host A sent in total and how many ACKs has Host B sent in total? What are their sequence numbers? With TCP, how many segments has Host A sent in total and how many ACKs has Host B sent in total? What are their sequence numbers?

Explanation / Answer

Answer :

a)with selective repeat,how manysegments has Host A sent in total and how many ACKs has Host B sent in total? what are their sequence number?

Answer :

A sends 6 segments in total.They are initially sent segments 1,2,3,4,5 and later re-sent segments 3rd and 4th.

B sends 4 ACKS.They are 3 ACKS with sequence number 1,2,5.And there is 2 ACKS with sequence number 2.

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.