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Example AWS flashcards
What is the primary purpose of AWS IAM?
IAM (Identity and Access Management) manages user identities and permissions to control who can access AWS resources and what actions they can perform.
What command lists all S3 buckets in an AWS account?
aws s3 ls
What is an AWS Security Group?
A virtual firewall that controls inbound and outbound traffic for EC2 instances using allow/deny rules based on protocols and ports.
How do you copy a file to S3 using AWS CLI?
aws s3 cp <local-file-path> s3://<bucket-name>/<key>
What is the difference between RDS and DynamoDB?
RDS is a relational database service (SQL-based) for structured data; DynamoDB is a NoSQL database for unstructured/semi-structured data with horizontal scaling.
What command retrieves EC2 instance details including IP addresses?
aws ec2 describe-instances --query 'Reservations[*].Instances[*].[InstanceId,PublicIpAddress,State.Name]'
What is an AWS Lambda function's execution role?
An IAM role that grants Lambda permissions to access AWS services (S3, DynamoDB, CloudWatch Logs, etc.) during execution.
What is the common pattern for auto-scaling in AWS?
Use Auto Scaling Groups with target tracking policies (CPU, memory, custom metrics) to automatically scale EC2 instances based on demand.
How do you stream logs from an EC2 instance to CloudWatch?
Install CloudWatch Logs agent on the instance, configure it with an IAM role that has logs:PutLogEvents permission, and specify log groups/streams in the agent config.
What is Infrastructure as Code (IaC) in AWS and which service implements it?
IaC is defining infrastructure in code templates instead of manual setup. CloudFormation (JSON/YAML) and CDK (TypeScript/Python) are AWS's primary IaC tools.
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