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4. Consider the following two causes of 1-second network delay (assume ACKS return instantaneously): One intermediate router with a 1-second outbound per-packet bandwidth delay and no competing traffic. One intermediate router with a 100-ms outbound per-packet bandwidth delay and with a steadily replenished (from another source) 10 packets in the queue. (a) How might a transport protocol in general distinguish between these two cases (b) Suppose TCP Vegas sends over the above connections, with an initial Congestion Window of 3 packets. What will happen to Congestion Window in each case? Assume BaseRTT = 1 second and ß is 1 packet per second

4. Consider the following two causes of 1-second network delay (assume ACKS return instantaneously): One intermediate router with a 1-second outbound per-packet bandwidth delay and no competing traffic. One intermediate router with a 100-ms outbound per-packet bandwidth delay and with a steadily replenished (from another source) 10 packets in the queue. (a) How might a transport protocol in general distinguish between these two cases (b) Suppose TCP Vegas sends over the above connections, with an initial Congestion Window of 3 packets. What will happen to Congestion Window in each case? Assume BaseRTT = 1 second and ß is 1 packet per second

Computer Networking: A Top-Down Approach (7th Edition)
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
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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4. Consider the following two causes of 1-second network delay (assume ACKS return instantaneously): One intermediate router with a 1-second outbound per-packet bandwidth delay and no competing traffic. One intermediate router with a 100-ms outbound per-packet bandwidth delay and with a steadily replenished (from another source) 10 packets in the queue. (a) How might a transport protocol in general distinguish between these two cases (b) Suppose TCP Vegas sends over the above connections, with an initial Congestion Window of 3 packets. What will happen to Congestion Window in each case? Assume BaseRTT = 1 second and ß is 1 packet per second
Transcribed Image Text:4. Consider the following two causes of 1-second network delay (assume ACKS return instantaneously): One intermediate router with a 1-second outbound per-packet bandwidth delay and no competing traffic. One intermediate router with a 100-ms outbound per-packet bandwidth delay and with a steadily replenished (from another source) 10 packets in the queue. (a) How might a transport protocol in general distinguish between these two cases (b) Suppose TCP Vegas sends over the above connections, with an initial Congestion Window of 3 packets. What will happen to Congestion Window in each case? Assume BaseRTT = 1 second and ß is 1 packet per second
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