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Fundamentals of computer networks

Fundamentals of computer networks

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Question 20

The four layers of the TCP/IP protocol stack are listed below:

  • W Link layer
  • X Internet layer
  • Y Transport layer
  • Z Application layer

For each description in the table below, write the letter (W, X, Y or Z) that matches the description. Each letter must be used exactly once.

DescriptionLetter
Attaches logical destination and source IP addresses, then determines the optimal routing path across multiple networks.
Identifies the correct destination software process using port numbers, and manages error-checking or flow control.
Translates user interactions into high-level network protocol commands, such as those used by DNS, FTP, or HTTPS.
Encapsulates packets into frames, appending local physical (MAC) addresses, and converts them into electrical or optical signals.
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Markscheme

Fundamentals of computer networks Questions

  1. GCSE
  2. /Computer Science
  3. /Fundamentals of computer networks

105 exam-style questions on AQA GCSE Computer Science Fundamentals of computer networks. Each one has a worked solution and a mark scheme showing where the marks go.

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