DBS-C01 Deployment and Migration Practice Question
A company is deploying a new application using Amazon DynamoDB. They need to ensure data durability and availability. Which THREE steps should they take? (Choose three.)
⚠ Common exam trap
Candidates often confuse performance-enhancing features (DAX, encryption) with durability and availability mechanisms, leading candidates to select options that improve speed or security instead of data persistence and regional resilience.
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
✓
Configure Auto Scaling for read and write capacity
DynamoDB Auto Scaling automatically adjusts provisioned read/write capacity based on actual traffic patterns, preventing throttling while controlling costs. This directly supports availability by ensuring the table can handle demand spikes without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure Auto Scaling for read and write capacity
Why this is correct
Ensures availability under load.
- ✗
Enable DynamoDB Accelerator (DAX)
Why it's wrong here
Improves performance, not durability/availability.
- ✗
Encrypt data at rest using AWS KMS
Why it's wrong here
Security, not durability/availability.
- ✓
Enable point-in-time recovery (PITR)
Why this is correct
Protects against accidental writes.
- ✓
Use DynamoDB Global Tables
Why this is correct
Provides multi-region durability and availability.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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