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FinalExam2013 Solution-RA.pdf - 1. (a) The DSCP of a IP...

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1. (a) The DSCP of a IP packet is 101100. What are the characteristics of this packet (e.g.,TOS, QoS etc)?
(b) In a weighted- fair queuing (WFQ), the current sequence number (SN) of a packet withIP precedence 011 is 530571360. What is the next SN for the same type packet (assumingthe IP packet size of 65,535 bytes)
(c) Discuss briefly how random early detection (RED) mechanism avoids congestion of TCPsessions in an IP network.
Instead of passively waiting until the buffers fill and enabling all subsequent traffic to be dropped, REDprogressively drops packets as soon as the buffers begin to fill.Below a minimum buffer threshold, no packets are discarded. Above the maximum buffer threshold, all

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Term
Fall
Professor
NoProfessor
Tags
Probability theory

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