Which port is used by the Finger protocol?

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Prepare for the CPSA Port Numbers exam with multiple choice questions and detailed explanations. Understand key protocols and services to excel in your test.

Multiple Choice

Which port is used by the Finger protocol?

Explanation:
Port numbers map services to the network location where clients connect. The Finger protocol is a simple text-based query service that traditionally runs over TCP and listens on port 79. This fixed assignment comes from the IANA registry and is reflected in common databases like /etc/services. That makes 79 the correct port to reach Finger. The other ports correspond to different services—21 for FTP, 70 for Gopher, and 80 for HTTP—so they’re not used by Finger.

Port numbers map services to the network location where clients connect. The Finger protocol is a simple text-based query service that traditionally runs over TCP and listens on port 79. This fixed assignment comes from the IANA registry and is reflected in common databases like /etc/services. That makes 79 the correct port to reach Finger. The other ports correspond to different services—21 for FTP, 70 for Gopher, and 80 for HTTP—so they’re not used by Finger.

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