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Application Layer and Transport Layer Protocols
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Application Layer and Transport Layer Protocols

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Questions and Answers

True or false: UDP is used for reliable data transfers.

False

True or false: TCP is used for unordered data transfers.

False

True or false: The application layer is an abstraction layer that sits on top of the transport layer.

True

Study Notes

  • The application layer is an abstraction layer that sits on top of the transport layer.
  • Application layer protocols use the underlying transport layer protocols to establish host-to-host connections.
  • For example, World-Wide-Web servers operate on port 80, and email relay servers usually listen on port 25.
  • TCP is used for reliable, ordered data transfers, while UDP is used for less reliable, unordered data transfers.
  • UDP lacks built-in network congestion avoidance, and so must be carefully designed to prevent network collapse.

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Description

Test your knowledge of the relationship between the application layer and transport layer protocols, as well as their functions and characteristics. This quiz covers topics such as host-to-host connections, port numbers, and the use of TCP and UDP for data transfers.

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