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Workload-Specific Database DesignmediumMultiple ChoiceObjective-mapped

DBS-C01 Workload-Specific Database Design Practice Question

Network Topology
aws rds describe-db-instancesdb-instance-identifier mydbquery 'DBInstances[0].[DBInstanceClassRefer to the exhibit.```Output:"db.r5.large","true","mysql","available"

A database administrator runs the above command. The database is currently in a healthy state. Which statement is true about this database?

⚠ Common exam trap

AWS often tests the distinction between Multi-AZ and read replicas, where candidates mistakenly think 'multi-az': True implies a read replica or cross-region setup, but Multi-AZ is solely for high availability within a single region, not for read scaling or disaster recovery across regions.

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 deployed in a Multi-AZ configuration

The command output shows the database is in the 'creating' state with 'multi-az': True. This explicitly indicates that the database is being deployed in a Multi-AZ configuration, which provides high availability by synchronously replicating data to a standby instance in a different Availability Zone.

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 engine is Amazon Aurora

    Why it's wrong here

    The engine is MySQL, not Aurora.

  • The database uses a burstable instance class

    Why it's wrong here

    db.r5.large is a memory-optimized instance, not burstable.

  • The database is deployed in a Multi-AZ configuration

    Why this is correct

    MultiAZ is true, so it has a standby in another AZ.

  • The database has a read replica in another region

    Why it's wrong here

    Multi-AZ is for high availability, not read replicas.

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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.