ISC2 CC Practice Question: Business Continuity, Disaster Recovery, and Incident Response
A company's Business Impact Analysis (BIA) determines that its online payment system can tolerate a maximum of 2 hours of downtime. The IT team estimates that restoring the system from backups will take 1 hour, and the team needs another 30 minutes to verify data integrity and resume normal operations. Which metric does the 30-minute verification period represent?
⚠ Common exam trap
Many exam-takers confuse WRT with RTO — candidates see 'time to restore' and 'time to verify' and lump them together, but the exam specifically tests whether you know WRT is the post-restoration validation phase that sits between RTO completion and full business resumption.
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
✓
Work Recovery Time (WRT)
The 30-minute verification period represents Work Recovery Time (WRT), which is the time needed after systems are technically restored to validate data integrity and confirm normal operations can resume. WRT is distinct from RTO because RTO covers only the time to bring systems back online, while WRT accounts for the post-recovery validation phase. Together, RTO + WRT must fit within the Maximum Tolerable Downtime (MTD) of 2 hours, which in this case is satisfied (1 hour RTO + 30 min WRT = 1.5 hours).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Recovery Point Objective (RPO)
Why it's wrong here
RPO refers to acceptable data loss, not time after restore.
- ✓
Work Recovery Time (WRT)
Why this is correct
WRT is the time needed after systems are restored to verify data integrity and resume normal operations. The 30-minute verification period fits this definition, sitting separately from the 1-hour recovery time within the 2-hour tolerance.
- ✗
Maximum Tolerable Downtime (MTD)
Why it's wrong here
MTD is the total 2-hour outage tolerance from the BIA, not the 30-minute verification slice. MTD is the correct metric when stating the overall downtime ceiling a business process can absorb before unacceptable impact, which the stem already gives as 2 hours.
- ✗
Recovery Time Objective (RTO)
Why it's wrong here
RTO covers the whole restoration window, including the 30-minute integrity verification, so the 30 minutes is a component of RTO rather than a separate metric. RTO is tempting because it is the closest-sounding downtime term, and it would be correct if the question asked for the total target time to resume operations.
Go deeper
Related to this question
Learn chapter
Security Operations Basics
Key term
Impact
Impact is the measure of the potential damage or harm that a risk event could cause to an organization's assets, operations, or reputation.
Key term
RTO
Recovery Time Objective is the maximum acceptable time to restore a system or data after a disaster, defining how quickly normal operations must resume.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISC2 exam blueprint
This CC practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CC exam.