DBS-C01 Monitoring and Troubleshooting Practice Question
A company uses Amazon DynamoDB with auto scaling enabled. They notice that a table's write capacity is frequently throttled during a specific hour each day. The access pattern is uniform across partitions. Which action would resolve the throttling without manual intervention?
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 minimum provisioned capacity in auto scaling.
When DynamoDB auto scaling is enabled, throttling can occur if the table's write capacity demand spikes faster than auto scaling can increase capacity. The 'minimum provisioned capacity' in the auto scaling policy sets a floor for the capacity units. By increasing this minimum, the table starts with a higher base capacity, reducing the likelihood of throttling during predictable peak hours. Option A is incorrect because DAX is a caching layer for reads, not writes. Option B is incorrect because disabling auto scaling requires manual intervention. Option C is incorrect because table partitioning in DynamoDB is managed automatically based on provisioned capacity; you cannot manually split partitions.
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) to cache writes.
Why it's wrong here
Incorrect. DAX caches reads, not writes.
- ✗
Disable auto scaling and set a fixed higher capacity.
Why it's wrong here
Incorrect. This would either waste capacity or still cause throttling if demand varies.
- ✗
Create a larger number of partitions by splitting the table.
Why it's wrong here
Incorrect. The access pattern is uniform, so partition splitting is not needed.
- ✓
Increase the minimum provisioned capacity in auto scaling.
Why this is correct
Correct. Setting a higher minimum ensures enough capacity during the spike, and auto scaling can scale up further if needed.
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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.