TEL103: Telecommunications 3

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Assignment 2 Part 3

1. What are the two reasons why UDP is considered best-effort delivery?
2. UDP datagrams are usually matched to the system's MTU except when?
3. Where is UDP datagram memory management handled?
4. Briefly describe the main function of the UDP header?
5. Identify the three ranges of TCP/IP port numbers.
6. Through which two processes does TCP track the transfer of data and ensure successful arrival?
7. Maximum TCP segment size is _______________ bytes.
8. Which source and destination numbers are used during step two of the handshake process?
9. Identify what occurs when the handshake process does not end with the ACK flag set (which indicates receipt of sequence number information).
10. What process maintains an established TCP connection when no data is present on the media?
11. How many packets are required for TCP connection termination?
12. TCP packets are ordered properly because of the sequence and acknowledgement process. Once a sequence number is initiated, how is it incremented in successive packets?
13. How is the RTO setting determined?
14. Which application layer protocol retrieves the data from the TCP buffer destined for port 21?
15. Which is the more serious event detected by the congestion avoidance mechanism, timeouts or triple-ACKs?

• Acknowledgement
• Byte Stream
• Congestion
• End-to-End Reliability
• Handshake Process
• Logical Connection
• MSS
• Out-of-Order Packets
• Positive Response
• Sliding Window
• Windowing