Question 31 of 144
SK0-005 security-disaster-recovery Practice Question
A database server hosts a critical application that requires a recovery point objective (RPO) of 4 hours. The company wants to minimize the impact on production performance during backups. Which backup strategy should be implemented?
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
✓
A weekly full backup with hourly incremental backups.
Option C is correct because hourly incremental backups meet the 4-hour RPO while minimizing resource usage compared to more frequent full backups or continuous replication. Option A is wrong because differential backups grow in size and can still exceed the RPO window. Option B is wrong because nightly full backups would fail to meet the 4-hour RPO if a disaster occurs hours after the last backup. Option D is wrong because CDP with synchronous replication imposes high performance overhead and is unnecessary beyond the 4-hour RPO requirement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Continuous data protection (CDP) with synchronous replication.
Why it's wrong here
CDP provides near-zero RPO but introduces significant performance overhead due to constant replication, which is overkill for a 4-hour RPO requirement.
- ✗
A weekly full backup with daily differential backups.
Why it's wrong here
Differential backups capture all changes since the last full backup, and while they can restore faster, the backup window may not guarantee a 4-hour RPO, and differential size grows over time, impacting performance.
- ✓
A weekly full backup with hourly incremental backups.
Why this is correct
Hourly incrementals ensure that no more than 1 hour of data is lost (well within the 4-hour RPO) and have minimal impact on production because they only back up changed data.
- ✗
A nightly full backup.
Why it's wrong here
A full backup every night would have up to a 24-hour gap between backups, failing to meet the 4-hour RPO if a failure occurs late in the day.
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Last reviewed: Jul 26, 2026
This SK0-005 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 SK0-005 exam.
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