CREST Practitioner Security Analyst (CPSA) Practice

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Which database management system uses port 1521?

PostgreSQL
Oracle
MySQL
MongoDB

The correct answer is: Oracle

Port 1521 is the default port used by Oracle Database Management System for its SQL*Net service. This service facilitates communication between the database and applications that connect to it. The use of this specific port enables Oracle to handle client requests and manage connections effectively, ensuring data can be accessed and manipulated securely. While other database management systems like PostgreSQL, MySQL, and MongoDB have their own designated default ports—PostgreSQL uses port 5432, MySQL uses port 3306, and MongoDB uses port 27017—Oracle consistently utilizes port 1521 across various versions. This port association is crucial for systems administrators and security analysts to know, as it plays an integral role in network configuration and security protocols related to Oracle database environments.