The answer is to initiate the warm site recovery by restoring the latest differential backup first. This is correct because a warm site already has standby servers and infrastructure ready, and a differential backup captures all changes since the last full backup, making it the fastest path to a usable state without the time cost of a full restore or the complexity of replaying every transaction log. On the ISC2 Certified in Cybersecurity CC exam, this scenario tests your understanding of recovery order and RTO management under pressure—a common trap is to waste time restoring a full backup or applying logs immediately, which would blow past the 12-hour RTO. Remember the key priority: when RTO is tight and a warm site is ready, always restore the latest differential backup first to minimize downtime. A useful memory tip is “Diff first, logs last”—differential backups bridge the gap fastest, saving log replay for after the system is operational.
ISC2 CC Business Continuity, DR & Incident Response Practice Question
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.
Your organization runs a critical e-commerce platform on a private cloud. The database server is located in a data center in a seismic zone. The current DR plan uses a warm site with daily differential backups and a 12-hour RTO. A recent earthquake caused a power outage but no physical damage. The database corruption was discovered after 6 hours. The backups from last night are intact but restoring involves applying transaction logs. The RTO is now at risk. What should be done FIRST?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Initiate the warm site recovery by restoring the latest differential backup onto standby servers.
Option C is correct because the immediate priority is to restore the latest differential backup onto the warm site's standby servers. This approach minimizes recovery time by applying only the changes since the last full backup, directly addressing the RTO risk. The warm site is already prepared, and restoring the differential backup is the fastest path to operational readiness without the overhead of full backup restoration or log replay.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Fail over to the warm site immediately without data restoration.
Why it's wrong here
Data loss would be unacceptable.
✗
Perform a point-in-time recovery using the last full backup and all transaction logs.
Why it's wrong here
Requires full backup first, slower.
✓
Initiate the warm site recovery by restoring the latest differential backup onto standby servers.
Why this is correct
Fastest recovery option given the warm site setup.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Restore the last full backup and then apply all subsequent differential and log backups.
Why it's wrong here
Takes longer than restoring only the differential backup.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that point-in-time recovery or full backup restoration is always the safest first step, but in a time-critical DR scenario with intact differential backups, the fastest recovery path is to restore the latest differential backup to meet RTO.
Detailed technical explanation
How to think about this question
Differential backups capture all changes since the last full backup, making them smaller and faster to restore than full backups. In a warm site DR scenario, standby servers are typically pre-configured with the same OS and database software, allowing immediate restoration of differential backups without full reinitialization. The RTO of 12 hours is at risk because restoring a full backup plus logs could take longer, whereas a differential restore can often complete in minutes to hours depending on data size.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CC question in full detail.
Business Continuity, DR & Incident Response — This question tests Business Continuity, DR & Incident Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Initiate the warm site recovery by restoring the latest differential backup onto standby servers. — Option C is correct because the immediate priority is to restore the latest differential backup onto the warm site's standby servers. This approach minimizes recovery time by applying only the changes since the last full backup, directly addressing the RTO risk. The warm site is already prepared, and restoring the differential backup is the fastest path to operational readiness without the overhead of full backup restoration or log replay.
What should I do if I get this CC question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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