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CV0-004 Practice Question: Designing a disaster recovery plan for its cloud…
A company is designing a disaster recovery plan for its cloud infrastructure. The primary site is in US-East, and the DR site is in US-West. The RPO is 15 minutes, and the RTO is 2 hours. Which replication strategy best meets these requirements at the lowest cost?
⚠ Common exam trap
CompTIA often tests the misconception that synchronous replication is always better for DR, but the trap here is that the 15-minute RPO allows asynchronous replication, which is far more cost-effective across long distances than the expensive low-latency links required for synchronous replication.
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
✓
Asynchronous replication from primary to DR
Asynchronous replication sends data changes from the primary site to the DR site with minimal delay, typically within seconds to minutes, which meets the 15-minute RPO. It does not require the low-latency link that synchronous replication demands, making it more cost-effective for geographically separated sites. The 2-hour RTO is achievable because the DR site can be activated quickly from the replicated data, without the overhead of restoring from backups.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Scheduled nightly backups to DR
Why it's wrong here
Nightly backups give an RPO of up to 24 hours, far exceeding the 15-minute requirement, and restoring them can breach the 2-hour RTO. It is tempting because it is the cheapest option, and would be correct for workloads tolerating day-old data loss and long recovery.
- ✓
Asynchronous replication from primary to DR
Why this is correct
Asynchronous replication meets the 15-minute RPO because changes are copied after commit, with typical lag well under that threshold, while avoiding the cost and bandwidth of synchronous replication across US-East to US-West. Synchronous would satisfy RPO but add cross-country latency and expense.
- ✗
Synchronous replication between sites
Why it's wrong here
Synchronous replication writes to both US-East and US-West before acknowledging, and cross-region latency inflates write times and cost. It is tempting because it delivers near-zero RPO, and would be correct for a zero-RPO requirement within a low-latency region pair.
- ✗
No replication; manual failover
Why it's wrong here
Manual failover with no replication leaves the DR site without current data, so the 15-minute RPO cannot be met and manual steps risk exceeding the 2-hour RTO. It is tempting as the zero-cost baseline, and would be correct only for non-critical systems where data loss is acceptable.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 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 CV0-004 exam.