DBS-C01 Monitoring and Troubleshooting Practice Question
A developer reports that an application's write requests to a DynamoDB table are failing with ProvisionedThroughputExceededException. The table uses provisioned capacity. Which immediate action will resolve the issue?
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
✓
Implement exponential backoff in the application
The correct immediate action is to implement exponential backoff in the application. This retry mechanism gradually increases wait time between retries, reducing the request rate to stay within provisioned throughput limits. Option A is incorrect because switching to on-demand capacity takes time and is not immediate. Option C is incorrect because DAX is a read cache and does not affect write throughput. Option D is incorrect because deleting GSIs does not resolve write throttling to the base table.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Switch the table to on-demand capacity
Why it's wrong here
Switching mode is not instantaneous and requires 30 minutes to take effect.
- ✓
Implement exponential backoff in the application
Why this is correct
Exponential backoff retries requests with increasing delays, reducing throttling.
- ✗
Enable DynamoDB Accelerator (DAX)
Why it's wrong here
DAX is a read cache and does not assist write throughput.
- ✗
Delete all global secondary indexes
Why it's wrong here
GSIs consume write capacity but deleting them may not free enough capacity.
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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.