DEA-C01 Data Store Management Practice Question
Network Topology
Refer to the exhibit. A data engineer ran the CLI command to check the configuration of an RDS instance named 'mydb'. Which statement accurately describes the current configuration?
⚠ Common exam trap
AWS often tests the misconception that a database with 'available' status must be a read replica or Multi-AZ, but the absence of the 'ReadReplicaSourceDBInstanceIdentifier' and 'MultiAZ: False' clearly identify it as a standalone Single-AZ 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 Single-AZ deployment and is not a read replica
The CLI command output shows 'DBInstanceStatus: available' and 'MultiAZ: False', indicating the database is running as a Single-AZ deployment. Additionally, the absence of a 'SourceDBInstanceIdentifier' field confirms it is not a read replica. The 'ReadReplicaSourceDBInstanceIdentifier' is not present, which would be required if it were a read replica.
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 in the 'stopped' state
Why it's wrong here
The CLI output shows the instance as available, not stopped, so this contradicts the exhibit. Stopped is correct only when DBInstanceStatus reports 'stopped', which occurs after deliberately halting an instance; the displayed status field indicates the database is running normally.
- ✓
The database is a Single-AZ deployment and is not a read replica
Why this is correct
The CLI output shows no MultiAZ or ReadReplica fields, confirming a standalone Single-AZ instance. This satisfies the stem's requirement to describe the current configuration accurately: the database runs in one Availability Zone with no read replica, so it offers no automatic failover or read scaling.
- ✗
The database is a read replica of another instance
Why it's wrong here
The exhibit shows no read-replica configuration, such as a SourceDBInstanceIdentifier or replica status, so this misreads the output. Read replicas are the right answer when the CLI output names a source instance and shows asynchronous replication; the displayed fields instead describe the primary instance's own settings.
- ✗
The database is a Multi-AZ deployment
Why it's wrong here
The exhibit lists a single Availability Zone with no secondary standby, so Multi-AZ is unsupported. Multi-AZ applies when the output shows MultiAZ set to true and paired AZ identifiers; here the configuration reflects a single-AZ instance, meaning no synchronous standby replica exists.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-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 DEA-C01 exam.