Multiple choice

Which of the following events occurs during the transport layer three-way handshake?

  1. The two applications exchange data.

  2. TCP initializes the sequence numbers for the sessions.

  3. UDP establishes the maximum number of bytes to be sent.

  4. The server acknowledges the bytes of data received from the client.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The TCP three-way handshake (SYN, SYN-ACK, ACK) serves to establish connection parameters and synchronize sequence numbers between the two endpoints. The initial sequence numbers (ISNs) are exchanged during this handshake. Data exchange occurs after the handshake completes. UDP does not use a handshake. The server acknowledges data during the data transfer phase, not during the handshake.