DEA-C01 Data Store Management Practice Question
A company is designing a multi-Region disaster recovery solution for Amazon DynamoDB. They need to ensure that data is replicated across Regions with minimal latency and that applications can read from any Region. Which THREE steps should be taken? (Choose THREE.)
⚠ Common exam trap
Test-takers frequently confuse DAX (a single-Region cache) with a multi-Region replication solution, or mistakenly think TTL can be used for data synchronization, when in fact only Global Tables combined with Streams provide the required cross-Region replication and read capability.
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 application to read from any Region using the DynamoDB endpoint.
DynamoDB Global Tables provide multi-Region, multi-master replication, allowing applications to read from any Region by simply pointing to the local DynamoDB endpoint. This ensures low-latency reads by serving data from the closest Region, and the replication is fully managed by DynamoDB.
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 application to read from any Region using the DynamoDB endpoint.
Why this is correct
Global Tables allow reads from any Region.
- ✗
Configure Time to Live (TTL) to automatically expire old data.
Why it's wrong here
TTL is for automatic deletion, not replication.
- ✓
Enable DynamoDB Global Tables.
Why this is correct
Global Tables provide multi-Region replication with eventual consistency.
- ✓
Enable DynamoDB Streams on the table.
Why this is correct
Streams capture item-level changes, which are used by Global Tables to replicate data.
- ✗
Deploy DynamoDB Accelerator (DAX) in each Region.
Why it's wrong here
DAX is a caching layer, not required for replication.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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