AWS DevOps Engineer - Basics Quiz

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This quiz covers fundamental DevOps concepts on AWS, including CI/CD services (CodePipeline, CodeBuild, CodeDeploy) and Infrastructure as Code (CloudFormation).

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Which AWS service is primarily used to orchestrate and model different stages of your software release process?

AWS CodePipeline

AWS CodeBuild

AWS CodeDeploy

AWS CodeCommit

CodePipeline acts as the "conductor" of your CI/CD workflow, managing the flow from source to build to deploy.

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What is the primary function of AWS CodeBuild?

To compile source code, run tests, and produce software packages.

To deploy applications to EC2.

To host Git repositories.

To monitor application performance.

CodeBuild is a fully managed build service that scales continuously and processes multiple builds concurrently.

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Which file defines the build instructions for AWS CodeBuild?

buildspec.yml

appspec.yml

docker-compose.yml

Jenkinsfile

The buildspec.yml file contains the commands and settings used by CodeBuild to run your build.

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Which file defines the deployment instructions for AWS CodeDeploy?

appspec.yml

buildspec.yml

deployment.yaml

package.json

The appspec.yml file is used by CodeDeploy to determine what to install and which lifecycle hooks to run.

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What does "Infrastructure as Code" (IaC) mean?

Managing and provisioning infrastructure through machine-readable definition files.

Manually configuring servers via SSH.

Writing application code in Python.

Using a GUI to create resources.

IaC allows you to automate infrastructure provisioning, ensuring consistency and version control.

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Which AWS service allows you to define infrastructure using JSON or YAML templates?

AWS CloudFormation

AWS OpsWorks

AWS Systems Manager

AWS Config

CloudFormation provides a common language to describe and provision all the infrastructure resources in your cloud environment.

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In CloudFormation, what is a "Stack"?

A collection of resources managed as a single unit.

A queue of messages.

A type of EC2 instance.

A monitoring dashboard.

When you create a stack, AWS CloudFormation provisions all the resources described in your template.

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Where should you securely store database passwords and API keys referenced in your pipeline?

AWS Secrets Manager or Systems Manager Parameter Store.

In the Git repository code.

In the buildspec.yml file directly.

In an S3 text file with public access.

Never hardcode secrets. Use managed services to inject them dynamically at runtime.

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Which Source Control service is hosted by AWS?

AWS CodeCommit

GitHub

GitLab

Bitbucket

CodeCommit is a secure, highly scalable, managed source control service that hosts private Git repositories.

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What is a "Blue/Green Deployment"?

A technique that shifts traffic between two identical environments running different versions of the application.

Deploying to all servers at once.

Updating servers one by one.

Deploying only to a mobile app.

Blue/Green deployment reduces downtime and risk by running two environments in parallel and switching traffic.

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Which service would you use to centralize logs from all your EC2 instances?

Amazon CloudWatch Logs

AWS CloudTrail

Amazon S3 Glacier

AWS X-Ray

The CloudWatch agent can push logs from EC2 instances to CloudWatch Logs groups for centralized storage and analysis.

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What is the purpose of the "Install" lifecycle event in CodeDeploy?

It copies the revision files to the instance.

It stops the application.

It validates the service.

It downloads the artifact.

During the Install phase, the CodeDeploy agent copies the revision files from the temporary location to the final destination folder.

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Which CodePipeline action type is used to add a step for manual verification before deploying to production?

Manual Approval

Invoke Lambda

Build

Source

A Manual Approval action pauses the pipeline execution until someone approves it via the console.

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How can you trigger a Lambda function automatically when a file is uploaded to an S3 bucket?

Configure an S3 Event Notification.

Use a Cron expression.

Use CloudFormation.

You must manually invoke it.

S3 can publish events (like s3:ObjectCreated) to Lambda, allowing for event-driven workflows.

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What is the main benefit of using Docker containers in a DevOps workflow?

Consistency across environments (Build once, run anywhere).

They are slower than Virtual Machines.

They imply serverless architecture.

They replace the need for databases.

Containers package code and dependencies together, ensuring that it runs the same on a laptop, testing server, and production.

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Which service is a fully managed container orchestration service compatible with Kubernetes?

Amazon EKS (Elastic Kubernetes Service)

Amazon ECS

AWS Fargate

AWS App Runner

EKS manages the Kubernetes control plane for you, making it easier to run standard K8s clusters.

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What is "Continuous Integration" (CI)?

The practice of merging code changes into a central repository frequently, followed by automated builds and tests.

Automatically releasing every change to customers.

Writing infrastructure as code.

Monitoring production systems.

CI focuses on finding integration bugs early by building and testing every commit.

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Which CloudFormation section allows you to pass values into the template at runtime?

Parameters

Mappings

Resources

Outputs

Parameters enable you to input custom values (like KeyPairName or InstanceType) when you create or update a stack.

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What does the "Resources" section of a CloudFormation template contain?

The AWS resources (e.g., EC2, S3) you want to create.

Input values.

Reusable constants.

Output values.

The Resources section is the only required section and defines the actual components to be built.

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Which tool allows you to treat your infrastructure as code using a familiar programming language (Python, TypeScript, Java)?

AWS CDK (Cloud Development Kit)

AWS CLI

Amazon Athena

AWS SDK

CDK allows you to define cloud resources using modern programming languages and synthesizes them into CloudFormation templates.

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