TCP/IP Four-Layer Model

Part of TCP/IP Layers · Section 2 of 11

DiagramUnit: 3.5 Fundamentals of Computer NetworksGCSE

This diagram covers TCP/IP Four-Layer Model within TCP/IP Layers for GCSE Computer Science. Revise TCP/IP Layers in 3.5 Fundamentals of Computer Networks for GCSE Computer Science with 16 exam-style questions and 18 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 2 of 11 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

TCP/IP Four-Layer Model

TCP/IP four-layer model diagram showing Layer 4 Application (HTTP, SMTP, FTP, DNS) at the top, Layer 3 Transport (TCP reliable delivery, UDP fast), Layer 2 Internet (IP routing and addressing), and Layer 1 Link (Ethernet, WiFi, MAC addresses) at the bottom, with arrows showing data flowing down layers when sending and up when receiving

Practice questions for TCP/IP Layers

How many layers does the TCP/IP model have?

  • A. 3
  • B. 4
  • C. 5
  • D. 7
1 markfoundation

Describe what the Internet layer does in the TCP/IP model.

2 marksstandard

Quick recall flashcards

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The Four-Layer Network Stack

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Layer 4: Application Layer

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