Express.js and Node.js Quiz

What is Express.js used for in Node.js applications?

• To manage database operations

• To build web and mobile applications

• To add styles to HTML files

• To create command-line scripts

What command is used to install Express.js using npm?

• npm express install

• install express

• npm install express

• node install express

Which middleware function in Express is used to parse incoming JSON requests?

• express.urlencoded()

• express.json()

• express.static()

• express.router()

RESTful services in Express.js are primarily used for which purpose?

• Authentication

• File handling

• Creating APIs

• Data visualization

Which HTTP method is used to retrieve data from a server in RESTful APIs?

• POST

• PUT

• DELETE

• GET

What does a 404 status code signify in RESTful services?

• Server error

• Resource not found

• Request successful

• Unauthorized access

Which method in Express.js is used to handle GET requests?

• app.get()

• app.post()

• app.listen()

• app.route()

What is the purpose of the app.listen() method?

• To define middleware

• To bind the application to a port and start the server

• To define API routes

• To stop the server

What is the purpose of Nodemon?

• To handle database operations

• To restart the server automatically during development

• To create RESTful APIs

• To deploy Node.js applications

Which command is used to install Nodemon globally?

• npm install nodemon

• npm install -g nodemon

• npm install --save nodemon

• node install nodemon