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1.

What is middleware in Express.js?

A type of database

Functions that execute during the request-response cycle and have access to the request and response objects

A type of cookie

2.

What is a way to set up middleware?

Use app.get('/', () => {}).

Use app.use(() => {}).

Use app.middleware() => {}).

3.

What is the purpose of route parameters in Express.js?

To capture values specified in the URL and use them to perform actions on the server

To store data in a database

To define the layout of the website

4.

What is the purpose of using query parameters in an Express app?

To encrypt data sent between the client and server

To authenticate users before accessing protected routes

To filter, sort, and paginate data returned from the server

5.

What is the difference between res.send() and res.json() in Express.js?

res.send() sends a JSON response while res.json() sends a plain text response

res.send() sends a plain text response while res.json() sends a JSON response with additional metadata

res.send() can send any type of response while res.json() is specifically designed for sending JSON data

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