Question: Two users, one using Telnet and one sending files with FTP, both send their traffic out via router R. The outbound link from R is

Two users, one using Telnet and one sending files with FTP, both send their traffic out via router R. The outbound link from R is slow enough that both users keep packets in R’s queue at all times. Discuss the relative performance seen by the Telnet user if R’s queuing policy for these two flows is:

(a) round-robin service.

(b) fair queuing.

(c) modified fair queuing, where we count the cost only of data bytes and not IP or TCP headers.

Consider outbound traffic only. Assume Telnet packets have 1 byte of data, FTP packets have 512 bytes of data, and all packets have 40 bytes of headers.

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