AWS Certified Cloud Practitioner — Question 303

Which AWS service stores graph data in the form of vertices and edges?

Answer options

• A. Amazon DynamoDB
• B. Amazon RDS
• C. Amazon Quantum Ledger Database (Amazon QLDB)
• D. Amazon Neptune

Correct answer: D

Explanation

Amazon Neptune is a purpose-built, fully managed graph database engine optimized for storing and navigating highly connected data using vertices and edges. In contrast, Amazon DynamoDB is a key-value/document database, Amazon RDS is a relational database service, and Amazon QLDB is a ledger database designed for immutable transaction logging.