Question 1,363 of 1,663
DBS-C01 Monitoring and Troubleshooting Practice Question
A developer reports that an application using Amazon DynamoDB is experiencing high latency during peak hours. The table has a provisioned capacity of 500 read capacity units (RCUs) and 500 write capacity units (WCUs). The application uses eventually consistent reads and the table is about 50 GB. The developer notices throttled write requests in CloudWatch. Which action would most effectively reduce write throttling?
⚠ Common exam trap
A common mix-up: candidates confuse read performance solutions (DAX, consistency changes) with write throttling issues, or incorrectly assume that adding a GSI will offload write traffic, when in fact it increases the write capacity burden on the base table.
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
✓
Increase the provisioned write capacity for the table.
The developer reports throttled write requests, which directly indicates that the provisioned write capacity (500 WCUs) is insufficient to handle the peak write traffic. Increasing the provisioned write capacity for the table is the most direct and effective action to eliminate write throttling, as it raises the limit on write operations per second. Option C is correct because it addresses the root cause—write capacity exhaustion—without introducing unnecessary components or changing read behavior.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable DynamoDB Accelerator (DAX) for the table.
Why it's wrong here
DAX improves read performance, not write capacity.
- ✗
Create a global secondary index on the table.
Why it's wrong here
Adding a GSI does not increase write capacity; writes to the table also write to the index.
- ✓
Increase the provisioned write capacity for the table.
Why this is correct
Increasing write capacity units reduces throttling for write requests.
- ✗
Switch from eventually consistent reads to strongly consistent reads.
Why it's wrong here
Read consistency does not affect write throughput.
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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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