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A2.1 Network fundamentalsA2.1.5

Function of the TCP/IP model

Describe the function of the TCP/IP model

HL only≈ 50 minCommand term: DescribePremium

In this lesson

  • The four layers of the TCP/IP model: application, transport, internet and network interface
  • The role of each layer and the protocols and devices that belong to it
  • How the layers interact, through encapsulation, to make data transmission reliable

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What's inside

  1. LearnWhy a layered model?
  2. LearnThe four layers
  3. LearnEncapsulation
  4. LabA web request through the layers
  5. CheckWhich layer?
  6. LearnHow the layers make transmission reliable
  7. CheckOrder the steps
  8. ExamWorked exam answer
  9. ReviewMistakes examiners see
  10. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 13 marks, with a self-marking markscheme.