Node JS MCQs - 10

What is the purpose of the res.type() method in Express.js?

• A) To set the HTTP status code of the response
• B) To set the content type of the response
• C) To send an HTTP response with JSON data
• D) To send an HTTP response with HTML content

Answer: B) To set the content type of the response

In Express.js, what is the purpose of the req.app property?

• A) To access the application settings
• B) To access the request headers
• C) To access the route object
• D) To access the base URL of the application

Answer: A) To access the application settings

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

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

Answer: C) morgan

What is the purpose of the res.jsonp() method in Express.js?

• A) To send a JSON response with padding
• B) To redirect the client to a new URL
• C) To send an HTTP response with HTML content
• D) To send an HTTP response with JSON data

Answer: A) To send a JSON response with padding

In Express.js, what does the req.subdomains property contain?

• A) The request method
• B) The request headers
• C) An array of subdomains in the domain name
• D) The route object

Answer: C) An array of subdomains in the domain name

What is the purpose of the res.attachment() method in Express.js?

• A) To set the HTTP status code of the response
• B) To attach a file to the response
• C) To send an HTTP response with JSON data
• D) To send an HTTP response with HTML content

Answer: B) To attach a file to the response

In Express.js, what is the purpose of the req.xhr property?

• A) To check if the request is an XMLHttpRequest
• B) To access the request headers
• C) To access the route object
• D) To access the base URL of the application

Answer: A) To check if the request is an XMLHttpRequest

Which of the following Express.js methods is used to handle HTTP TRACE requests?

• A) app.trace()
• B) app.get()
• C) app.post()
• D) app.delete()

Answer: A) app.trace()

What is the purpose of the res.end() method in Express.js?

• A) To send an HTTP response with JSON data
• B) To end the response process
• C) To set the HTTP status code of the response
• D) To redirect the client to a new URL

Answer: B) To end the response process

In Express.js, what is the purpose of the req.route.path property?
- A) To access the request method

- B) To access the request headers
- C) To access the route path pattern
- D) To access the route object

Answer: C) To access the route path pattern