Summary

Internet Transport Protocols Services

• TCP: Transmission Control Protocol

  • Reliable data transfer between sender and receiver
  • Flow control to prevent overwhelming receiver
  • Congestion control to prevent overwhelming network
  • Connection-oriented (handshake)
  • Used for applications that require reliability (e.g., web, email, file transfer)

• UDP: User Datagram Protocol

  • Unreliable data transfer (no guarantee of delivery, order, or duplicate protection)
  • Connectionless (no handshake)
  • Used for applications that can tolerate loss and require low latency (e.g., streaming, gaming, VoIP)