Which of these services is NOT typically modified during a disaster recovery plan implementation?

In the context of disaster recovery plans, the focus is on ensuring that critical services can quickly resume to maintain business continuity. Services such as RADIUS (Remote Authentication Dial-In User Service), FTP (File Transfer Protocol), and Active Directory are integral to managing access and data transfer in an organization's IT environment.

Typically, during disaster recovery operations, organizations may need to make modifications to these services to ensure they function properly in a recovery environment. For example, adjustments may be required in authentication protocols for RADIUS, configurations for FTP, or replication and recovery processes for Active Directory.

Choosing "None of the above" highlights that all listed services could potentially be modified during a disaster recovery plan implementation. This emphasizes that every component of the IT infrastructure may need to be evaluated and adjusted to align with recovery objectives and to ensure that they can operate effectively in the event of a disaster. Overall, the correct answer underscores the importance of flexibility and adaptability of all services during the disaster recovery process.