1. Question 1 — (Select TWO)

Deployment strategies that minimize release risk

• ❌ Manual Deployment

• ✅ Canary Deployment

• ❌ In-Place Deployment

• ❌ All-at-Once Deployment

• ✅ Blue/Green Deployment

Correct answers: 2 & 5

Explanation:

• Canary → releases to a small % first → low risk

• Blue/Green → deploys to a new environment → instant rollback
  Other strategies increase risk.

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2. Question 2

Why is the AppSpec file important in CodeDeploy?

• ❌ Defines infra resources

• ✅ Provides deployment instructions & lifecycle hooks

• ❌ Configures permissions

• ❌ Stores env variables

Explanation:
AppSpec defines how to deploy, including BeforeInstall, AfterInstall, ApplicationStart, etc.

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3. Question 3

Key advantage of AWS CDK

• ✅ Define infrastructure with familiar programming languages

• ❌ Monitors performance

• ❌ Deploys apps directly to EC2

• ❌ Automates AI model testing

Explanation:
CDK uses Python, TypeScript, Java, etc., to generate CloudFormation templates.

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4. Question 4 — (Select TWO)

Tools to troubleshoot deployment issues

• ❌ AWS X-Ray (for distributed tracing, not deployment failures)

• ❌ Patch Manager

• ❌ S3 Buckets

• ✅ AWS CloudFormation Change Sets

• ✅ AWS CodeDeploy Deployment Logs

Correct answers: 4 & 5

Explanation:

• Change Sets → preview infra modifications → detect potential issues

• Deployment Logs → show lifecycle failures, script errors, rollback reasons

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5. Question 5

Role of CloudFormation Rollback

• ❌ Preview changes

• ✅ Revert infrastructure to last stable state after failure

• ❌ Create new resources

• ❌ Monitor config changes

Explanation:
Rollback protects environments by undoing failed stack updates.

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🧾 Summary Table

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