DBS-C01 Monitoring and Troubleshooting Practice Question
A company uses Amazon DynamoDB Global Tables with strong consistent reads. They notice that a write to us-east-1 is not visible in eu-west-1 after several seconds. Which configuration setting is MOST likely causing this behavior?
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
✓
DynamoDB Streams is not enabled on the table
DynamoDB Global Tables require DynamoDB Streams to be enabled on the table. If streams are disabled, write operations in one region will not be replicated to other regions, causing the writes to never become visible. This matches the symptom of writes not appearing after several seconds. Option B (Auto Scaling) does not affect replication. Option C (LWW conflict resolution) is enabled by default and does not cause delays. Option D (strongly consistent reads) are not supported on Global Tables and would generate an error, not a delay.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
DynamoDB Streams is not enabled on the table
Why this is correct
Global Tables require DynamoDB Streams to replicate writes; without it, replication does not occur.
- ✗
Auto Scaling is configured for write capacity
Why it's wrong here
Auto Scaling does not affect replication latency.
- ✗
Last writer wins (LWW) conflict resolution is disabled
Why it's wrong here
LWW is always enabled for Global Tables and does not cause write visibility delays.
- ✗
Strongly consistent reads are used on a global table
Why it's wrong here
Strongly consistent reads are not supported on Global Tables; attempting them would cause an error, not a delay.
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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.