Quick Answer
The answer is Recovery Time Objective (RTO). RTO is the correct metric because it defines the maximum acceptable downtime that an organization can tolerate after a disaster, specifying the target time within which systems and services must be restored to avoid unacceptable consequences. In contrast, Recovery Point Objective (RPO) measures the maximum acceptable data loss, not downtime. On the CompTIA SecurityX CAS-004 exam, this distinction is frequently tested in disaster recovery scenarios, often with a trap that confuses RTO with RPO or with metrics like MTBF (reliability) and MTTR (repair time). A common memory tip is to associate the “T” in RTO with “Time” (downtime) and the “P” in RPO with “Point” (data loss point), so when you see a question about how long systems can be down, think RTO.
This CAS-004 practice question tests your understanding of governance, risk and compliance. 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 company is evaluating its disaster recovery plan. Which metric indicates the maximum acceptable downtime?
Mean Time to Repair (MTTR)
Why wrong: MTTR measures average repair time, not acceptable downtime.
Recovery Point Objective (RPO)
Why wrong: RPO defines acceptable data loss, not downtime.
Recovery Time Objective (RTO)
RTO is the maximum acceptable downtime.
Mean Time Between Failures (MTBF)
Why wrong: MTBF measures system reliability over time.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Recovery Time Objective (RTO)
Option B is correct because Recovery Time Objective (RTO) defines the maximum acceptable downtime. Option A is wrong RPO defines acceptable data loss. Option C is wrong MTBF measures reliability. Option D is wrong MTTR measures repair time.
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.
Mean Time to Repair (MTTR)
Why it's wrong here
MTTR measures average repair time, not acceptable downtime.
Recovery Point Objective (RPO)
Why it's wrong here
RPO defines acceptable data loss, not downtime.
Recovery Time Objective (RTO)
Why this is correct
RTO is the maximum acceptable downtime.
Related concept
Read the scenario before looking for a memorised answer.
Mean Time Between Failures (MTBF)
Why it's wrong here
MTBF measures system reliability over time.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CAS-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which CAS-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Governance, Risk and Compliance — study guide chapter
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FAQ
Governance, Risk and Compliance — This question tests Governance, Risk and Compliance — Read the scenario before looking for a memorised answer..
The correct answer is: Recovery Time Objective (RTO) — Option B is correct because Recovery Time Objective (RTO) defines the maximum acceptable downtime. Option A is wrong RPO defines acceptable data loss. Option C is wrong MTBF measures reliability. Option D is wrong MTTR measures repair time.
Identify which CAS-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CAS-004 practice question is part of Courseiva's free CompTIA 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 CAS-004 exam.
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