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 6533.
2. The destination port for packet C is port 6217.
3. The source port for packet D is port 6217.
4. The destination port for packet D is port 6533.
5. The source port for packet A is port 6868.
6. The destination port for packet A is port 6217.
7. The source port for packet B is port 6217.
8. The destination port for packet B is port 6868.
That's incorrect
That's correct
The answer was: 6533
The answer was: 6217
The answer was: 6217
The answer was: 6533
The answer was: 6868
The answer was: 6217
The answer was: 6217
The answer was: 6868