SAP-C02 Design for New Solutions Practice Question
A company is designing a new application on AWS that requires a highly available and durable NoSQL database. The database must be able to scale horizontally for both reads and writes. Which TWO AWS services meet these requirements? (Choose two.)
⚠ Common exam trap
Candidates often confuse Amazon DocumentDB with a self-managed MongoDB deployment or assume that any database with 'Document' in the name lacks horizontal scaling, while in reality DocumentDB provides automatic replication and read scaling similar to DynamoDB.
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
✓
Amazon DynamoDB
Amazon DynamoDB is a fully managed NoSQL key-value and document database that provides high availability and durability by automatically replicating data across multiple Availability Zones in an AWS Region. It supports horizontal scaling for both reads and writes through its partitioning mechanism and on-demand or provisioned capacity modes, making it ideal for applications requiring consistent performance at any scale.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon Neptune
Why it's wrong here
Neptune is a graph database, not a general-purpose NoSQL database.
- ✓
Amazon DynamoDB
Why this is correct
DynamoDB is a fully managed NoSQL database with horizontal scaling and high durability.
- ✗
Amazon RDS for MySQL with Multi-AZ
Why it's wrong here
RDS is a relational database, not NoSQL.
- ✓
Amazon DocumentDB (with MongoDB compatibility)
Why this is correct
DocumentDB is a NoSQL document database that scales horizontally.
- ✗
Amazon ElastiCache for Memcached
Why it's wrong here
ElastiCache is a caching service, not a durable NoSQL database.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.