UDP Multiplexing and Demultiplexing
In the scenario below, the left and right clients communicate with a server using UDP sockets. The same socket at the server is used to communicate with both clients. The Python code used to create the sockets is shown in the figure. Consider the four transport-layer packets – A, B, C and D – shown in the figure below.
Question List
1. What is the source port # for packet C?
2. What is the destination port # for packet C?
3. What is the source port # for packet D?
4. What is the destination port # for packet D?
5. What is the source port # for packet A?
6. What is the destination port # for packet A?
7. What is the source port # for packet B?
8. What is the destination port # for packet B?
Solution
1. The source port for packet C is port 5411.
2. The destination port for packet C is port 7167.
3. The source port for packet D is port 7167.
4. The destination port for packet D is port 5411.
5. The source port for packet A is port 6008.
6. The destination port for packet A is port 7167.
7. The source port for packet B is port 7167.
8. The destination port for packet B is port 6008.
That's incorrect
That's correct
The answer was: 5411
The answer was: 7167
The answer was: 7167
The answer was: 5411
The answer was: 6008
The answer was: 7167
The answer was: 7167
The answer was: 6008