a. Suppose we send into the Internet two IP datagrams, each carrying a different UDP segment. The first datagram has source IP address A1, destination IP address B, source port P1, and destination port T. The second datagram has source IP address A2, destination IP address B, source port P2, and destination port T. Suppose that A1 is different from A2 and that P1 is different from P2. Assuming that both datagrams reach their final destination, will the two UDP datagrams be received by the same socket? Why or why not? b. Suppose Alice, Bob, and Claire want to have an audio conference call using SIP and RTP. For Alice to send and receive RTP packets to and from Bob and Claire, is only one UDP socket sufficient (in addition to the socket needed for the SIP messages)? If yes, then how does Alice's SIP client distinguish between the RTP packets received from Bob and Claire?

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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a. Suppose we send into the Internet two IP datagrams, each carrying a different UDP
segment. The first datagram has source IP address A1, destination IP address B, source
port P1, and destination port T. The second datagram has source IP address A2,
destination IP address B, source port P2, and destination port T. Suppose that A1 is
different from A2 and that P1 is different from P2. Assuming that both datagrams reach
their final destination, will the two UDP datagrams be received by the same socket? Why
or why not?
b. Suppose Alice, Bob, and Claire want to have an audio conference call using SIP and
RTP. For Alice to send and receive RTP packets to and from Bob and Claire, is only one
UDP socket sufficient (in addition to the socket needed for the SIP messages)? If yes,
then how does Alice's SIP client distinguish between the RTP packets received from Bob
and Claire?
Transcribed Image Text:a. Suppose we send into the Internet two IP datagrams, each carrying a different UDP segment. The first datagram has source IP address A1, destination IP address B, source port P1, and destination port T. The second datagram has source IP address A2, destination IP address B, source port P2, and destination port T. Suppose that A1 is different from A2 and that P1 is different from P2. Assuming that both datagrams reach their final destination, will the two UDP datagrams be received by the same socket? Why or why not? b. Suppose Alice, Bob, and Claire want to have an audio conference call using SIP and RTP. For Alice to send and receive RTP packets to and from Bob and Claire, is only one UDP socket sufficient (in addition to the socket needed for the SIP messages)? If yes, then how does Alice's SIP client distinguish between the RTP packets received from Bob and Claire?
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