DBS-C01 Monitoring and Troubleshooting Practice Question
A company uses Amazon DynamoDB with global tables. During a regional outage, the application fails over to the secondary region. After recovery, the DBA notices that the data in the secondary region is not fully consistent with the primary. Which THREE steps should the DBA take to diagnose the issue? (Choose THREE.)
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
✓
Verify that DynamoDB Streams is enabled on the table.
Options A, D, and E are correct. Verifying DynamoDB Streams (A) ensures that change data capture is enabled for replication. Reviewing DynamoDB Streams error logs in CloudWatch Logs (D) helps identify replication errors. Checking the ReplicationLatency metric (E) reveals if there is replication lag. Option B is not a diagnostic step; disabling and re-enabling global tables is disruptive and not recommended. Option C is incorrect because increasing write capacity on the secondary table does not address consistency issues; replication depends on streams and network, not write capacity.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Verify that DynamoDB Streams is enabled on the table.
Why this is correct
Streams are required for global tables to replicate changes.
- ✗
Disable and re-enable global tables to force resync.
Why it's wrong here
This is disruptive and not a diagnostic step.
- ✗
Increase the write capacity on the secondary table.
Why it's wrong here
Increasing capacity does not resolve data inconsistency.
- ✓
Review the DynamoDB Streams error logs in CloudWatch Logs.
Why this is correct
Error logs can indicate failures in replication.
- ✓
Check the ReplicationLatency metric in CloudWatch.
Why this is correct
This metric shows the delay in replication between regions.
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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.