LFZ Express Quiz

Question 1

How do you add express to your package dependencies?

Answer 1

npm i express

Question 2

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

Answer 2

listen()

Question 3

How do you mount a middleware with an Express application?

Answer 3

app.use(middeware)

Question 4

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

Answer 4

req, res, next

Question 5

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

Answer 5

Content-Type: text/json; charset=UTF-8

Question 6

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

Answer 6

It tells the server what callback function to use?

Question 7

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

Answer 7

Allows you to use JSON, It also parses the body

Question 8

What does express.static() return?

Answer 8

a function that sends files

Question 9

What is the local __dirname variable in a Node.js module?

Answer 9

An absolute path of directory of the current module

Question 10

What does the join() method of Node’s path module do?

Answer 10

The path.join() method joins all given path segments together using the platform-specific separator as a delimiter, then normalizes the resulting path.