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Module 4: Transport Layer & Congestion Control

20262m

Consider the following TCP exchange:

  1. Client → Server: SYN
  2. Server → Client: SYN + ACK
  3. Client → Server: ACK

What is the purpose of this exchange?

  • (i) IP fragmentation
  • (ii) TCP connection termination
  • (iii) UDP connection establishment
  • (iv) TCP connection establishment
Worked SolutionAI Assisted

Answer: (iv) TCP connection establishment

This is the three-way handshake:

  1. Client → Server: SYN (client's initial sequence number)
  2. Server → Client: SYN + ACK
  3. Client → Server: ACK

After this, both sides are synchronized and the connection is open.

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