Exam AWS Certified Database - Specialty All Questions

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Exam AWS Certified Database - Specialty topic 1 question 177 discussion

Exam question from Amazon's AWS Certified Database - Specialty

Question #: 177
Topic #: 1

[All AWS Certified Database - Specialty Questions]

A company is building a web application on AWS. The application requires the database to support read and write operations in multiple AWS Regions simultaneously. The database also needs to propagate data changes between Regions as the changes occur. The application must be highly available and must provide latency of single-digit milliseconds.
Which solution meets these requirements?

A. Amazon DynamoDB global tables
B. Amazon DynamoDB streams with AWS Lambda to replicate the data
C. An Amazon ElastiCache for Redis cluster with cluster mode enabled and multiple shards
D. An Amazon Aurora global database

Show Suggested Answer

Suggested Answer: A 🗳️

by 2025flakyt at Dec. 10, 2021, 3:44 p.m.

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awsmonster

Highly Voted 3 years, 7 months ago

A: DynamoDB Global tables Aurora Global Databases provides a writer and a reader endpoints in the primary region but only a reader endpoints in other region. Although strongly consistent, it does not fulfill the requirements that "there are plenty of read / write activities" in all regions.

upvoted 5 times

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Pranava_GCP

Most Recent 1 year, 11 months ago

Selected Answer: A

A: DynamoDB Global tables because of below A: DynamoDB providing single-digit millisecond latency D: Aurora Global Database with typical cross-Region replication latencies below 1 second.

upvoted 1 times

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novice_expert

3 years, 3 months ago

Selected Answer: A

A. Amazon DynamoDB global tables

upvoted 1 times

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kret

3 years, 4 months ago

Selected Answer: A

we need to write in several regions -> Aurora Global is single master, so DynamoDB Global is an answer

upvoted 3 times

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grekh001

3 years, 8 months ago

The questions states that the database needs to "support concurrent read and write activities in several AWS Regions." Aurora Global databases only allow writes to the single master in a single region. DynamoDB Global tables allow read and write to all instances in all regions. Answer is A

upvoted 3 times

jove

3 years, 7 months ago

I agree, the answer is A

upvoted 1 times

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2025flakyt

3 years, 8 months ago

D is the answer

upvoted 1 times

2025flakyt

3 years, 8 months ago

The question states that - Additionally, the database must communicate data changes across Regions as they occur. DynamoDB is eventual consistency Aurora is immediate consistency

upvoted 2 times

Radhaghosh

3 years, 3 months ago

Did you read this line? "the database supports concurrent read and write activities in several AWS Regions". Does Aurora Global Database support this feature?

upvoted 1 times

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