This CC practice question tests your understanding of business continuity, dr & incident response. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A primary data center is destroyed. The disaster recovery plan calls for activation of a hot standby site. If the RTO is 2 hours, what is the expected recovery time?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Exactly 2 hours
Why wrong: RTO is a maximum, not an exact target; actual time may vary but should be ≤ 2.
More than 2 hours
Why wrong: Exceeding the RTO would indicate failure of the DR plan.
Unknown, depends on the disaster
Why wrong: A hot site provides predictable recovery time, so it is not unknown.
Less than 2 hours
Hot sites are designed to achieve RTOs; recovery is expected within the target.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Less than 2 hours
The RTO (Recovery Time Objective) defines the maximum acceptable downtime, not the guaranteed recovery time. A hot standby site is fully operational and synchronized, so recovery can be completed in less than the RTO if the disaster does not cause additional complications. Option D is correct because the expected recovery time should be less than the 2-hour RTO, assuming the hot site functions as designed.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Exactly 2 hours
Why it's wrong here
RTO is a maximum, not an exact target; actual time may vary but should be ≤ 2.
More than 2 hours
Why it's wrong here
Exceeding the RTO would indicate failure of the DR plan.
Unknown, depends on the disaster
Why it's wrong here
A hot site provides predictable recovery time, so it is not unknown.
Less than 2 hours
Why this is correct
Hot sites are designed to achieve RTOs; recovery is expected within the target.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
ISC2 often tests the misconception that RTO is a guaranteed recovery time rather than a maximum allowable downtime, leading candidates to incorrectly choose 'Exactly 2 hours' or 'More than 2 hours' when the correct answer is that recovery should be faster than the RTO.
Detailed technical explanation
A hot standby site typically uses synchronous replication (e.g., VMware vSphere Metro Storage Cluster or Oracle Data Guard with SYNC transport) to maintain zero or near-zero data loss, allowing failover in minutes. The RTO is a contractual or business-driven metric, while the actual recovery time is measured by the RTA (Recovery Time Actual), which should be consistently lower than the RTO to provide a safety margin. In real-world scenarios, factors like DNS propagation, application warm-up, and manual verification steps can add latency, but a well-tested hot site should still recover well under the 2-hour threshold.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Business Continuity, DR & Incident Response — This question tests Business Continuity, DR & Incident Response — Read the scenario before looking for a memorised answer..
The correct answer is: Less than 2 hours — The RTO (Recovery Time Objective) defines the maximum acceptable downtime, not the guaranteed recovery time. A hot standby site is fully operational and synchronized, so recovery can be completed in less than the RTO if the disaster does not cause additional complications. Option D is correct because the expected recovery time should be less than the 2-hour RTO, assuming the hot site functions as designed.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
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