1. Using the network packets captured and saved in the previous section, critically assess the core TCP/IP communication protocols involved in getting the web page of Brunel University (or any webpage).

2.

Use a captured data frame to explain how communication network protocols are organised in a layered structure. Model the communication delay based on the network traffic data collected via Wireshark.

3.

Find the packets involved in the three-way handshake that initiates the connection. Examine these packets to answer the following questions, show the calculations and explain the process in your report.

What is the sequence number in the SYN segment?

What is the sequence number in the SYNACK segment?

What is the acknowledgment number in the SYNACK segment? How did the server determine this acknowledgement number?

What time was the SYN segment sent? What time was the SYNACK segment received? What is the round-trip time?