Grading scheme for Assignment 4:
Question 1:
Chapter 3: Transport Layer - 5 marks
1. Internet checksum (similar to Chapter 3, P3 and P4) (20/64)*0.5
2. Reliable data transfer: rdt22 (130/64)*0.5
3. Reliable data transfer: rdt30 (10/64)*0.5
4. TCP sequence and ACK numbers, with segment loss (similar to Chapter 3, P27) (20/64)*0.5
5. TCP RTT and timeout (similar to Chapter 3, P31) (90/64)*0.5
6. TCP congestion window evolution (similar to Chapter 3, P40) (60/64)*0.5
7. TCP retransmissions (reliable data transmission with ACK loss) (150/64)*0.5
8. UDP Mux and Demux (80/64)*0.5
9. TCP Mux and Demux (80/64)*0.5
Question 2: Getting Started - 1 marks
0.25 mark is for timestamp.
0.25 marks for screen prints.
0.5 marks for description of main steps.
Question 2: HTTP - 2 marks
0.5 mark is for timestamp.
0.5 marks for screen print.
1.0 marks for description of main steps.
Question 2: DNS - 2 marks
0.5 mark is for timestamp.
0.5 marks for screen print.
1.0 marks for description of main steps.