SK0-005 security-disaster-recovery Practice Question
A financial services firm requires zero data loss in the event of a primary data center failure. They operate two data centers 50 miles apart connected by a high-bandwidth, low-latency link. Which replication method should they use to meet this requirement?
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
✓
Synchronous replication
Option B is correct because synchronous replication writes data to both sites before acknowledging the write to the application, ensuring zero data loss (RPO=0). Asynchronous replication (Option A) introduces a delay and can lose the latest transactions. Snapshot replication (Option C) is point-in-time and not continuous, leading to potential data loss between snapshots. Backup replication nightly (Option D) can lose up to a day's data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Asynchronous replication every 15 minutes
Why it's wrong here
Asynchronous replication, even at 15-minute intervals, can lose up to 15 minutes of data, failing the zero data loss requirement.
- ✗
Snapshot replication every hour
Why it's wrong here
Snapshot replication captures data at discrete intervals, resulting in potential data loss up to one hour, which is not zero loss.
- ✗
Backup replication nightly
Why it's wrong here
Nightly backups provide an RPO of 24 hours, far from the required zero data loss.
- ✓
Synchronous replication
Why this is correct
Synchronous replication ensures that any write is committed to both replicas before being acknowledged, thus achieving RPO=0.
Visual reference
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Related to this question
Key term
BIA and RPO RTO Design
Business Impact Analysis and the design of Recovery Point Objective and Recovery Time Objective define how much data loss and downtime a business can tolerate after an IT failure, guiding the architecture of backup and disaster recovery systems.
Key term
RPO
Recovery Point Objective (RPO) is the maximum acceptable amount of data loss measured in time, defining how recent data must be to resume operations after a disruption.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed July 2026 · checked against the official CompTIA exam blueprint
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.