Match each AWS database feature to its description.
Drag a concept onto its matching description — or click a concept then click the description.
Synchronous standby replica for high availability
Asynchronous read-only copy for scaling reads
Automatic adjustment of Aurora replica count
In-memory cache for DynamoDB with microsecond latency
Connection pooling for RDS to handle Lambda bursts
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Multi-AZ: Provides high availability by automatically replicating data to a standby instance in a different Availability Zone.
Multi-AZ is for high availability and failover; Read Replicas offload read traffic; Auto Scaling adjusts capacity; Point-in-Time Recovery enables granular restores. Common confusions involve swapping Multi-AZ and Read Replicas definitions.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Multi-AZ: Provides high availability by automatically replicating data to a standby instance in a different Availability Zone.
Why this is correct
Multi-AZ deployments ensure high availability and automatic failover.
Read Replicas: Allows you to offload read traffic from the primary database by creating read-only copies.
Why this is correct
Read Replicas scale read workloads and reduce latency.
Auto Scaling: Automatically adjusts the database's storage or compute capacity based on demand.
Why this is correct
Auto Scaling helps maintain performance during traffic spikes.
Point-in-Time Recovery: Enables restoring the database to any second within a retention period.
Why this is correct
Point-in-Time Recovery allows granular restores for data protection.
Multi-AZ: Allows you to offload read traffic from the primary database.
Why it's wrong here
Incorrect — this describes Read Replicas, not Multi-AZ.
Read Replicas: Provides high availability by automatically replicating data to a standby instance.
Why it's wrong here
Incorrect — this describes Multi-AZ, not Read Replicas.
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Last reviewed: Jun 11, 2026
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.
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