Quick Answer
The answer is Recovery Time Objective (RTO). This metric is correct because it defines the maximum acceptable downtime for a business process or application after a disruption, as identified during a business impact analysis (BIA). In the scenario, the 4-hour restoration requirement for the customer service application directly aligns with the RTO, which drives the design of recovery strategies and resource allocation. On the CISSP exam, this concept tests your understanding of BIA outputs and how they inform business continuity planning; a common trap is confusing RTO with Recovery Point Objective (RPO), which focuses on data loss rather than downtime. To remember, think of RTO as the “time to turn the lights back on” — it’s all about the clock, not the data.
This CISSP practice question tests your understanding of security and risk management. 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.
During a business impact analysis (BIA), the team identifies that the customer service application must be restored within 4 hours of a disruption. What is the term for this metric?
Maximum Tolerable Downtime (MTD)
Why wrong: MTD is the total downtime the business can survive, often longer than RTO.
Recovery Point Objective (RPO)
Why wrong: RPO defines acceptable data loss, not downtime.
Service Level Agreement (SLA)
Why wrong: SLA is a contract metric, not a BIA outcome.
Recovery Time Objective (RTO)
RTO is the targeted time to restore a function.
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)
The Recovery Time Objective (RTO) defines the maximum acceptable time that a business process or application can be unavailable after a disruption. In this scenario, the 4-hour restoration requirement for the customer service application directly matches the RTO metric, which drives the design of recovery strategies and resource allocation.
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.
Maximum Tolerable Downtime (MTD)
Why it's wrong here
MTD is the total downtime the business can survive, often longer than RTO.
Recovery Point Objective (RPO)
Why it's wrong here
RPO defines acceptable data loss, not downtime.
Service Level Agreement (SLA)
Recovery Time Objective (RTO)
Why this is correct
RTO is the targeted time to restore a function.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is confusing RTO with MTD, as candidates often think MTD is the same as the recovery time target, but MTD is the total tolerable outage including business impact, while RTO is the specific IT recovery goal set to meet that MTD.
Detailed technical explanation
In practice, RTO is derived from the BIA and directly influences the selection of recovery technologies, such as high-availability clustering, failover to a hot standby site, or cloud-based disaster recovery. For example, an RTO of 4 hours might require automated failover scripts and pre-staged infrastructure, whereas a shorter RTO (e.g., 15 minutes) would demand synchronous replication and active-active configurations. The RTO is also distinct from the Recovery Time Actual (RTA), which measures the real time taken during a recovery event.
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
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FAQ
Security and Risk Management — This question tests Security and Risk Management — Read the scenario before looking for a memorised answer..
The correct answer is: Recovery Time Objective (RTO) — The Recovery Time Objective (RTO) defines the maximum acceptable time that a business process or application can be unavailable after a disruption. In this scenario, the 4-hour restoration requirement for the customer service application directly matches the RTO metric, which drives the design of recovery strategies and resource allocation.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CISSP 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 CISSP exam.
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