Express

Question 1

How do you add express to your package dependencies?

Answer 1

-npm install express

Question 2

What Express application method starts the server and binds it to a network PORT?

Answer 2

-app.listen()

Question 3

How do you mount a middleware with an Express application?

Answer 3

-app.use();

Question 4

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

Answer 4

• request object

- response object

Question 5

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

Answer 5

-application/json; charset=utf-8

Question 6

What does the express.json() middleware do and when would you need it?

Answer 6

-Parses incoming requests with JSON payloads and is based on body-parser

Question 7

What is the significance of an HTTP request’s method?

Answer 7

-determines what action SHOULD be done with the given resource but programmer can make it do whatever