Cloud Concepts & AWS Core Services Flashcards

A company wants to avoid upfront capital expenses for IT infrastructure and instead pay only for what they use. Which cloud benefit does this represent?

Answer: Trade capital expense for variable expense

Trading capital expense (CapEx) for variable expense (OpEx) is a key cloud benefit that lets companies pay only for what they consume.

Which AWS service provides a managed relational database that automates backups, patching, and failover?

Answer: Amazon RDS

Amazon RDS (Relational Database Service) automates common DBA tasks like backups, software patching, and multi-AZ failover.

What does the AWS concept of 'elasticity' primarily refer to?

Answer: Automatically scaling resources up or down to match demand

Elasticity means automatically acquiring or releasing resources to match current demand, avoiding over- or under-provisioning.

A startup needs a simple way to host a static website with low latency globally. Which AWS combination is most cost-effective?

Answer: S3 + CloudFront

Amazon S3 can host static website files, and CloudFront serves them from edge locations worldwide with low latency at minimal cost.

Which AWS service allows you to run code without provisioning or managing servers?

Answer: AWS Lambda

AWS Lambda is a serverless compute service that runs your code in response to events without requiring server management.

Under the AWS Shared Responsibility Model, which task is the CUSTOMER's responsibility?

Answer: Managing IAM user permissions

Customers are responsible for security 'in' the cloud, which includes managing IAM users, roles, and access policies.

Which AWS service provides a virtual private network connection between an on-premises network and a VPC using the public internet?

Answer: AWS VPN

AWS VPN creates an encrypted IPsec tunnel over the public internet connecting your on-premises network to your VPC.