What is one of the strategies used for disaster recovery?

Parallel processing refers to the simultaneous execution of multiple processes or calculations, primarily to enhance computational speed and efficiency. While beneficial for data processing tasks, it does not directly contribute to disaster recovery strategies, which focus on data preservation and system restoration.

Data encryption is a security measure used to protect sensitive information from unauthorized access by converting it into a coded format. Although important for safeguarding data integrity and confidentiality, encryption alone does not facilitate recovery from data loss or system failures during a disaster.

User authentication is a security process that verifies the identity of users attempting to access a system or data. While crucial for maintaining security and access control, it does not relate to methods for recovering data or restoring systems after a disaster event.