DBS-C01 Deployment and Migration Practice Question
Network Topology
Refer to the exhibit. A database administrator runs the AWS CLI command and gets the following output: {"Engine":"mysql","DBInstanceStatus":"available","MultiAZ":true,"SecondaryAvailabilityZone":"us-east-1b"}. What can be concluded about the database deployment?
⚠ Common exam trap
Candidates often confuse the `SecondaryAvailabilityZone` field with a Read Replica or Aurora's multi-AZ nature, but only a Multi-AZ deployment with a synchronous standby explicitly populates this field in the describe output for a non-Aurora RDS instance.
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
✓
The database is a Multi-AZ deployment with a standby in a different Availability Zone.
The output shows `"MultiAZ":true` and `"SecondaryAvailabilityZone":"us-east-1b"`, which are explicit indicators of a Multi-AZ deployment for an RDS MySQL instance. In a Multi-AZ deployment, Amazon RDS automatically provisions and maintains a synchronous standby replica in a different Availability Zone, and the `SecondaryAvailabilityZone` field confirms the standby's location. This matches option D exactly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The database is a Single-AZ deployment.
Why it's wrong here
MultiAZ is true.
- ✗
The database has a Read Replica in a different Availability Zone.
Why it's wrong here
Read Replicas are not shown by this field.
- ✗
The database is an Amazon Aurora cluster.
Why it's wrong here
Engine is mysql, not aurora.
- ✓
The database is a Multi-AZ deployment with a standby in a different Availability Zone.
Why this is correct
MultiAZ true and SecondaryAZ present.
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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.