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DBS-C01 Deployment and Migration Practice Question
Arrange the steps to configure a read replica for an Amazon RDS for PostgreSQL DB instance in a different AWS Region in the correct order.
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
✓
Enable automatic backups on the source DB instance, then create a cross-Region read replica in the target Region, then monitor replication lag.
Cross-Region read replicas require backups enabled on the source, then creating a replica in another Region and monitoring lag.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable automatic backups on the source DB instance, then create a cross-Region read replica in the target Region, then monitor replication lag.
Why this is correct
This is the correct order because automatic backups must be enabled on the source before a read replica can be created, and monitoring lag only makes sense after the replica is established.
- ✗
Create a cross-Region read replica in the target Region, then enable automatic backups on the source DB instance, then monitor replication lag.
Why it's wrong here
This is incorrect because the source must have automatic backups enabled before a read replica can be created; otherwise, the creation will fail.
- ✗
Monitor replication lag, then enable automatic backups on the source DB instance, then create a cross-Region read replica in the target Region.
Why it's wrong here
This is incorrect because monitoring lag requires an existing replica, and backups must be enabled before creating the replica.
- ✗
Enable automatic backups on the source DB instance, then monitor replication lag, then create a cross-Region read replica in the target Region.
Why it's wrong here
This is incorrect because you cannot monitor replication lag until after the read replica is created and replication begins.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services 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 DBS-C01 exam.