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CV0-004 Practice Question: A financial services company has a disaster…
A financial services company has a disaster recovery (DR) plan for its cloud infrastructure that includes a secondary region 500 miles away. The plan uses synchronous replication for the primary database. During a scheduled DR test, the administrator triggers a failover to the secondary region. The application comes up, but the database is missing the last three minutes of transactions. The RPO requirement is 5 seconds. The administrator finds that the network latency between regions is 40 milliseconds. What is the most likely cause of the data loss, and what should the administrator do?
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
✓
Switch to asynchronous replication and accept a longer RPO, or choose a DR region with lower network latency.
Synchronous replication requires the primary database to wait for acknowledgment from the secondary before committing a transaction. With 40ms network latency, this introduces significant delays, causing timeouts and dropped transactions, resulting in data loss exceeding the 5-second RPO. To meet the RPO, the administrator should either switch to asynchronous replication (which does not wait for acknowledgment, reducing latency impact but requiring a higher RPO) or choose a DR region with lower latency to support synchronous replication. Option A correctly identifies these solutions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Switch to asynchronous replication and accept a longer RPO, or choose a DR region with lower network latency.
Why this is correct
Synchronous replication over long distances with high latency is prone to timeouts; asynchronous replication or a closer region is needed.
- ✗
Reduce the RPO requirement to 30 seconds.
Why it's wrong here
Changing the RPO requirement may not solve the technical limitation; the replication method must also change.
- ✗
Enable compression on the replication link to reduce data transfer time.
Why it's wrong here
Compression can help but does not overcome the fundamental latency issue in synchronous replication.
- ✗
Increase the instance size in the secondary region to handle more transactions.
Why it's wrong here
Instance size does not affect replication consistency; the issue is latency.
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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.