Core Services
24 practice questions with explanations — 15 free to try
3 of these 24 questions are in the free 15-question taster · the full topic is part of Premium
PassNova has 24 AWS Cloud Practitioner practice questions on Core Services, each with a clear explanation. A 15-question taster is free with no sign-up; the full bank is part of PassNova Premium. Updated for 2026.
Core Services: example questions & answers
3 worked examples with answers and explanations below. Try 15 AWS Cloud Practitioner questions free in the browser; the full 24-question Core Services bank is part of PassNova Premium.
What is Amazon S3 primarily used for?
- ARunning virtual machines, the role of EC2
- BContent delivery acceleration from global edge locations, the job of Amazon CloudFront
- CHosting managed relational database engines such as MySQL and PostgreSQL, which Amazon RDS provides
- DObject storage for any type of data✓
Answer: Amazon S3 (Simple Storage Service) is an object storage service offering industry-leading scalability, data availability, security, and performance for storing any type of data.
Which AWS service provides a managed relational database?
- AAmazon Redshift
- BAmazon ElastiCache
- CAmazon DynamoDB
- DAmazon RDS✓
Answer: Amazon RDS (Relational Database Service) provides a managed relational database service supporting engines like MySQL, PostgreSQL, Oracle, SQL Server, and Amazon Aurora.
Which Amazon S3 storage class is most cost-effective for data that is accessed infrequently but requires rapid access when needed?
- AS3 Standard
- BS3 Standard-Infrequent Access (S3 Standard-IA)✓
- CS3 One Zone-IA
- DThe S3 Glacier storage class
Answer: S3 Standard-IA is designed for data that is accessed less frequently but requires rapid access when needed. It offers lower storage costs than S3 Standard with a retrieval fee, making it ideal for backups and disaster recovery files.