02. Transport Layer

Responsible for process-to-process communication.

• UDP (User Datagram Protocol)
  • A fast, connectionless "fire-and-forget" protocol.
  • No prior setup and no guarantee of delivery.
  • For applications where speed is critical and minor data loss is acceptable, such as live video streaming or online gaming.
• TCP (Transmission Control Protocol)
  • A reliable, connection-oriented protocol.
  • Ensures all data arrives in the correct order and without errors.