What is the five-phase process for any incident response?

What is the five-phase process for any incident response?

• A. Notification and Initial Information, Initial Actions, Planning, Execution, Case Documentation and Mission Conclusion
• B. Detection, Containment, Eradication, Recovery, Validation
• C. Preparation, Response, Recovery, Lessons Learned
• D. Identify, Plan, Execute, Close

Answer: (A)

The five-phase process emphasizes a complete incident response lifecycle from first notice to final closure. It starts with Notification and Initial Information, which ensures the right people are alerted and initial data is collected to understand what happened. Then Initial Actions focus on quick stabilization and early containment to prevent further impact. Planning follows, where the team outlines the approach, assigns roles, and coordinates the steps needed to handle the incident. Execution is putting that plan into action, carrying out containment, eradication or remediation, and restoration efforts as defined. Finally, Case Documentation and Mission Conclusion wraps up the effort with thorough record-keeping, evidence preservation if needed, and formal closure plus lessons learned to improve future responses. This structure suits any incident because it covers readiness and communication, rapid stabilization, deliberate strategy, active response, and thorough after-action work. The other options skip one or more essential elements—for instance, you’ll find cycles that focus only on detection and recovery without the planning and closure phases, or they list too few stages—so they don’t provide the complete end-to-end workflow needed for consistent, traceable incident handling.

The five-phase process emphasizes a complete incident response lifecycle from first notice to final closure. It starts with Notification and Initial Information, which ensures the right people are alerted and initial data is collected to understand what happened. Then Initial Actions focus on quick stabilization and early containment to prevent further impact. Planning follows, where the team outlines the approach, assigns roles, and coordinates the steps needed to handle the incident. Execution is putting that plan into action, carrying out containment, eradication or remediation, and restoration efforts as defined. Finally, Case Documentation and Mission Conclusion wraps up the effort with thorough record-keeping, evidence preservation if needed, and formal closure plus lessons learned to improve future responses.

This structure suits any incident because it covers readiness and communication, rapid stabilization, deliberate strategy, active response, and thorough after-action work. The other options skip one or more essential elements—for instance, you’ll find cycles that focus only on detection and recovery without the planning and closure phases, or they list too few stages—so they don’t provide the complete end-to-end workflow needed for consistent, traceable incident handling.