Match each AWS service to its primary purpose.
Drag a concept onto its matching description — or click a concept then click the description.
Relational database service with managed instances
NoSQL key-value and document database
In-memory caching service supporting Redis and Memcached
Petabyte-scale data warehouse
MongoDB-compatible document database
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
RDS: Managed relational database service supporting multiple engines
These are core AWS database services with distinct use cases. Common confusions include mixing up Redshift (data warehouse) with ElastiCache (in-memory cache) and Neptune (graph) with DocumentDB (document).
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
RDS: Managed relational database service supporting multiple engines
Why this is correct
RDS is a fully managed relational database service that supports multiple database engines like MySQL, PostgreSQL, and Oracle.
DynamoDB: Fully managed NoSQL key-value and document database
Why this is correct
DynamoDB is a fast and flexible NoSQL database service for key-value and document data.
Redshift: Fully managed in-memory caching service
Why it's wrong here
Incorrect — Redshift is a petabyte-scale data warehouse, not a caching service. ElastiCache is the in-memory caching service.
ElastiCache: Fully managed petabyte-scale data warehouse
Why it's wrong here
Incorrect — ElastiCache is an in-memory caching service, not a data warehouse. Redshift is the data warehouse.
Aurora: MySQL and PostgreSQL-compatible relational database
Why this is correct
Aurora is a MySQL and PostgreSQL-compatible relational database with high performance and availability.
Neptune: Fully managed document database
Why it's wrong here
Incorrect — Neptune is a fully managed graph database, not a document database. DocumentDB is the document database service.
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About these practice questions
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.