Question 43

Data mirroring is one of the strategies used for disaster recovery.

Data mirroring involves creating an exact copy of data in real-time to ensure that it is available in case of a disaster. This strategy allows organizations to maintain continuity and quick restoration of services if the primary data source becomes unavailable.

A) Parallel processing

Parallel processing refers to the simultaneous execution of multiple processes to enhance performance, but it is not specifically a disaster recovery strategy. While it can improve system efficiency, it does not provide a method for recovering from data loss or system failure.

B) Data encryption

Data encryption is a security measure that protects data by converting it into a coded format. Although it is vital for safeguarding sensitive information, it does not directly address the need for data recovery in the event of a disaster.

C) Data mirroring

Data mirroring is a key disaster recovery strategy that ensures data is duplicated in real-time to a secondary location. This technique allows for immediate access to critical data in the event of hardware failure or other disasters, making it essential for maintaining business continuity.

D) User authentication

User authentication is a security process that verifies the identity of users accessing a system. While important for security purposes, it does not relate to disaster recovery strategies, as it does not facilitate the recovery of lost or compromised data.

Conclusion

Data mirroring is definitively the correct strategy for disaster recovery as it enables organizations to maintain a real-time backup of their data, ensuring swift recovery when needed. In contrast, the other options focus on performance, security, or user access, which do not provide solutions for data recovery during a disaster.