Which concept describes the limited set of functions that must be continued during or resume rapidly after a disruption?

• A. Mission Essential Functions (MEFs)
• B. Mean Time to Repair (MTTR)
• C. Recovery Service Level (RSL)
• D. Privacy Impact Assessment (PIA)

Answer: (A)

The idea being tested is identifying the set of activities that must continue operating during or be restored quickly after a disruption. Mission Essential Functions are that exact set—the minimum operations that must be sustained or resumed rapidly to prevent unacceptable consequences. This focus helps guide what to protect first, how to allocate resources, and how to shape recovery plans within continuity management. For instance, in a critical service organization, MEFs might include safety and emergency-response tasks or core customer services that keep the organization functioning under stress. The other terms describe different concepts: mean time to repair is about how long repairs take, not which tasks must continue; privacy impact assessment deals with privacy risks rather than continuity; and recovery service level is not a standard measure for identifying essential operations.