CAS-004 Security Operations Practice Question
During a security incident, the incident response team has identified the root cause and removed the threat from all affected systems. Which phase of the incident response lifecycle involves returning systems to normal operation and monitoring for any signs of recurrence?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Recovery
The incident response lifecycle includes preparation, detection, containment, eradication, recovery, and lessons learned. Recovery is the phase where systems are restored to normal operation and monitoring is implemented to ensure the threat does not return.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Eradication
Why it's wrong here
Eradication removes the threat, but does not involve restoring normal operations.
- ✗
Containment
Why it's wrong here
Containment stops the spread but does not restore systems.
- ✓
Recovery
Why this is correct
Recovery restores systems and monitors for recurrence.
- ✗
Lessons Learned
Why it's wrong here
Lessons Learned occurs after recovery, focusing on process improvement.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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