# Project #9795 - Networking

I need this due in 2 days, on sunday. Can you help with it ?

This and the two following questions assume the same scenario. Only one endpoint is sending

1. Suppose a TCP endpoint sends a segment with 887 bytes and sequence number 7630. The endpoint then sends a 762-byte segment.  What is the sequence number of the second segment?

1b. . Suppose a TCP endpoint sends a segment with 887 bytes and sequence number 7630. The endpoint then sends a 762-byte segment.  If the other peer acknowledges the first segment, what value should be in the acknowledgement field?

1c. Suppose a TCP endpoint sends a segment with 887 bytes and sequence number 7630. The endpoint then sends a 762-byte segment.  If the other peer acknowledges the second segment, what should the value of the acknowledgement field be?

2. Suppose you are downloading data from a server, and you observe a throughput of 500 kb/s. If you open a second parallel flow from the server, you will see a download speed  of 833 kb/s. Estimate the transmission rate of the server and the total number of clients currently downloading from the server. Hint: set it up as a pair of equations with a pair of unknowns.

Server transmission rate  =

Number of clients =

(count yourself as one client)

3. Suppose a TCP endpoint experiences losses when the congestion window reaches 12.5kb. Assume losses due to errors are not a factor. The round trip time is one second. With each of the proposed RTTs mentioned below, what throughput should be expected ? Give answers in b/s.

RTT 0.01 s

RTT 0.1 s

RTT 1s

RTT 10s

 Subject Science Due By (Pacific Time) 07/28/2013 12:00 am
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