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Computer & Networking BasicsPorts

A transport-layer port number primarily identifies?

  • AAn application or process endpoint on a host
  • BA physical switch connector only
  • CA router's power supply
  • DA cable length
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Correct Answer: A. An application or process endpoint on a host
Explanation: TCP and UDP ports allow incoming traffic to be delivered to the appropriate application/process endpoint.
Reference: Standard computer networking fundamentals: ports
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