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 A?
2. What is the destination port # for packet A?
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 B?
6. What is the destination port # for packet B?
7. What is the source port # for packet C?
8. What is the destination port # for packet C?
Solution
1. The source port for packet A is port 5367.
2. The destination port for packet A is port 5387.
3. The source port for packet D is port 5387.
4. The destination port for packet D is port 6391.
5. The source port for packet B is port 5387.
6. The destination port for packet B is port 5367.
7. The source port for packet C is port 6391.
8. The destination port for packet C is port 5387.
That's incorrect
That's correct
The answer was: 5367
The answer was: 5387
The answer was: 5387
The answer was: 6391
The answer was: 5387
The answer was: 5367
The answer was: 6391
The answer was: 5387