CLF-C02 Question #816: Real Exam Question with Answer & Explanation

The correct answer is A: Amazon DynamoDB. Amazon DynamoDB is a nonrelational database that delivers reliable performance at any scale. It's a fully managed, multi-region, multi-master database that provides consistent single-digit millisecond latency, and offers built-in security, backup and restore, and in-memory cachin

Submitted by valeria.br· Mar 6, 2026Cloud Technology and Services

Question

Which AWS service is a key-value database that provides sub-millisecond latency on a large scale?

Options

AAmazon DynamoDB
BAmazon Aurora
CAmazon DocumentDB (with MongoDB compatibility)
DAmazon Neptune

Explanation

Amazon DynamoDB is a nonrelational database that delivers reliable performance at any scale. It's a fully managed, multi-region, multi-master database that provides consistent single-digit millisecond latency, and offers built-in security, backup and restore, and in-memory caching.

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