DBS-C01 Management and Operations Practice Question
A company runs an Amazon DynamoDB table with on-demand capacity. They notice that a specific partition key receives a high volume of read requests, causing throttling for that partition. What is the BEST solution to distribute the load evenly?
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
✓
Add a random suffix to the partition key values to increase partition cardinality.
Adding a suffix to the partition key to create multiple partitions distributes read load across 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.
- ✗
Create a global secondary index with a different partition key.
Why it's wrong here
A GSI does not affect the base table's partition distribution.
- ✓
Add a random suffix to the partition key values to increase partition cardinality.
Why this is correct
This spreads reads across multiple partitions, reducing hot spots.
- ✗
Use DynamoDB Accelerator (DAX) to cache reads.
Why it's wrong here
DAX reduces read load but does not fix partition-level hot spots.
- ✗
Switch the table to provisioned capacity with auto-scaling.
Why it's wrong here
On-demand already handles bursts; throttling is due to partition-level hot spots.
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Written by Johnson Ajibi, MSc IT Security
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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.