MEAN MEAN Stack Security and Deployment 2

Question 1

What is Docker and how does it benefit MEAN stack application deployment?

Accepted Answer

Containerizes each application component (Node, MongoDB, Angular) for consistent, portable deployments

Answer

Docker packages applications with their dependencies into containers that run consistently across development, staging, and production environments, eliminating 'works on my machine' issues.

Question 2

What is Nginx commonly used for in a production MEAN stack deployment?

Accepted Answer

Reverse proxy that forwards requests to Node.js, serves Angular static files, and handles SSL termination

Answer

Nginx acts as a reverse proxy, receiving all incoming traffic, serving the Angular build's static files directly, forwarding API requests to Express, and terminating SSL.

Question 3

What does the `npm run build` command do for an Angular application?

Accepted Answer

Compiles TypeScript, bundles modules, optimizes assets, and outputs static files to the dist/ folder

Answer

ng build (triggered by npm run build) compiles Angular TypeScript, performs tree-shaking, minification, and code splitting, outputting optimized static files for production deployment.

Question 4

What is CI/CD in the context of MEAN stack development?

Accepted Answer

Continuous Integration automatically tests code changes; Continuous Deployment automatically deploys passing builds

Answer

CI/CD pipelines automatically run tests on every commit (CI) and deploy the application to staging or production when tests pass (CD), reducing manual deployment risk.

Question 5

What is the purpose of a `.env` file in a MEAN stack Node.js project?

Accepted Answer

Stores environment-specific configuration and secrets locally without committing them to version control

Answer

.env files store secrets like MongoDB URIs, JWT secrets, and API keys using dotenv; they must be in .gitignore to prevent accidentally committing credentials.

MEAN - Stack Development Practice Test

MEAN - Stack Development Practice Test

MEAN MEAN Stack Security and Deployment 2