Node JS MCQs - 8

Which of the following is NOT a built-in middleware function in Express.js?

• A) express.json()
• B) express.static()
• C) express.urlencoded()
• D) express.validate()

Answer: D) express.validate()

In Express.js, what is the purpose of the res.cookie() method?

• A) To send an HTTP response with JSON data
• B) To set cookies in the client's browser
• C) To send an HTTP response with HTML content
• D) To redirect the client to a new URL

Answer: B) To set cookies in the client's browser

Which of the following is a common template engine used with Express.js for server-side rendering?

• A) React
• B) Angular
• C) Vue.js
• D) EJS

Answer: D) EJS

What does REST stand for in the context of web services?

• A) Real-time Service Technology
• B) Remote Execution Service Toolkit
• C) Representational State Transfer
• D) Responsive Service Transformation

Answer: C) Representational State Transfer

In Express.js, what does the req.originalUrl property return?

• A) The original URL requested by the client
• B) The current URL of the request
• C) The base URL of the application
• D) The query string of the URL

Answer: A) The original URL requested by the client

Which method is used to set up route-specific middleware in Express.js?

• A) app.use()
• B) app.route()
• C) router.use()
• D) router.route()

Answer: C) router.use()

What is the purpose of the express.Router() function in Express.js?

• A) To define route-specific middleware
• B) To create an instance of the Express application
• C) To define route handlers
• D) To initialize the Express.js server

Answer: A) To define route-specific middleware

In Express.js, how can you access route parameters?

• A) Using req.query
• B) Using req.body
• C) Using req.params
• D) Using req.headers

Answer: C) Using req.params

Which of the following middleware is commonly used for session management in Express.js?

• A) express.json()
• B) express.static()
• C) express-session
• D) express.urlencoded()

Answer: C) express-session

What is the purpose of the req.baseUrl property in Express.js?

• A) To access request query parameters
• B) To access the base URL of the application
• C) To access URL route parameters
• D) To access request body parameters

Answer: B) To access the base URL of the application