Which port and protocol is commonly used by the Oracle Database listener?

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Prepare for the CPSA Port Numbers Exam with quizzes on port numbers, services, and protocols. Each question is accompanied by hints and detailed explanations. Get exam-ready with our comprehensive study tool!

Multiple Choice

Which port and protocol is commonly used by the Oracle Database listener?

Explanation:
The Oracle Database listener is the entry point that accepts client connections to the database, and it uses TCP as the transport protocol for reliable, ordered communication. The default port configured for this listener is 1521, making 1521 TCP the most commonly used pairing. You can change the port in the listener configuration, but 1521 is the standard, widely recognized value. The other ports shown correspond to entirely different services (27017 for MongoDB, 1883 for MQTT, 636 for LDAPS), so they aren’t used by the Oracle listener.

The Oracle Database listener is the entry point that accepts client connections to the database, and it uses TCP as the transport protocol for reliable, ordered communication. The default port configured for this listener is 1521, making 1521 TCP the most commonly used pairing. You can change the port in the listener configuration, but 1521 is the standard, widely recognized value. The other ports shown correspond to entirely different services (27017 for MongoDB, 1883 for MQTT, 636 for LDAPS), so they aren’t used by the Oracle listener.

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