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Knowledge organisers / Wired and wireless networks, protocols and layers

Common protocols: TCP/IP (Transmission Control Protocol/Internet Protocol)

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Knowledge organiser

Wired and wireless networks, protocols and layers

1.3.2e.i

What you need to know

TCP/IP (Transmission Control Protocol / Internet Protocol) is the fundamental protocol suite that powers the Internet. TCP handles reliable data delivery; IP handles addressing and routing.

Key points

  • Definition:TCP (Transmission Control Protocol): breaks data into packets, ensures all packets arrive completely and in the correct order, and requests re-sending of any missing packets.
  • Definition:IP (Internet Protocol): responsible for addressing and routing data packets across networks using IP addresses, ensuring they reach the correct destination.
  • TCP and IP work together: IP handles the addressing/routing, TCP handles the reliable delivery.
  • Exam Tip:TCP ensures data arrives COMPLETELY and in the CORRECT ORDER. IP ensures data is ROUTED to the correct DESTINATION.