Core AWS services and concepts for building and deploying applications, tested on AWS Developer Associate.
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- What is Amazon EC2?
- A web service providing resizable compute capacity in the cloud
- What is an AMI?
- Amazon Machine Image, a pre-configured template containing OS, application software, and settings
- What is Amazon S3?
- Simple Storage Service, an object storage service for storing and retrieving data
- What is an S3 bucket?
- A container that holds objects (files) stored in S3
- What does S3 versioning enable?
- Keeping multiple versions of an object to recover from unintended overwrites or deletions
- What is an S3 lifecycle policy?
- A set of rules that automatically transition or delete objects based on age or other criteria
- What is AWS Lambda?
- A compute service that runs code in response to events without provisioning servers
- What languages does Lambda support?
- Python, Node.js, Java, Go, C#, Ruby, and custom runtimes
- What is the maximum execution time for a Lambda function?
- 15 minutes (900 seconds)
- What is Amazon RDS?
- Relational Database Service, a managed database service for relational databases
- Which database engines does RDS support?
- MySQL, PostgreSQL, MariaDB, Oracle Database, and SQL Server
- What is a read replica in RDS?
- A read-only copy of the primary database that can be used to offload read traffic
- What is Multi-AZ deployment in RDS?
- A standby instance in a different availability zone for automatic failover and high availability
- What is Amazon DynamoDB?
- A fully managed NoSQL database service with fast and predictable performance
- What are the two billing modes in DynamoDB?
- Provisioned (reserved capacity) and on-demand (pay-per-request)