Certified Information Systems Security Professional (CISSP) Practice Exam

The primary function of database replication is to mirror a live database for simultaneous access. This process involves creating copies of a database in multiple locations which can be accessed concurrently by users or applications. By using replication, organizations can enhance the availability and reliability of their data. If one database becomes unavailable due to failure or maintenance, users can still access the replicated database without interruption.

Database replication also plays a crucial role in load balancing, where multiple databases handle incoming requests. This not only improves performance but also ensures that the system can scale efficiently as demand increases. Furthermore, replication can provide a level of fault tolerance, ensuring that there is a backup available, should one instance of the database experience issues.

While backup solutions, data aggregation, and performance optimization are important aspects of data management, they do not directly relate to the primary objective of replication, which is to maintain synchronized copies of a database to ensure concurrent access and improve system resilience.