express hello world

Question 1

How do you mount a middleware with an Express application?

Answer 1

use method,

Question 2

Which objects does an Express application pass to your middleware to manage the request/response lifecycle of the server?

Answer 2

pass a callback function with three arguments,a request object, response object, and a variable named next.

Question 3

What is the appropriate Content-Type header for HTTP messages that contain JSON in their bodies?

Answer 3

Object, array, string, boolean, number or null