Express JS Express Routing 2

Question 1

Which Express method defines a route that handles HTTP GET requests?

Accepted Answer

app.get()

Answer

app.fetch()

Answer

app.read()

Answer

app.retrieve()

Question 2

What is route chaining in Express?

Accepted Answer

Using app.route() to chain multiple HTTP method handlers for one path

Answer

Connecting multiple apps together

Answer

Linking routes across different files

Answer

Using nested route parameters

Question 3

In Express, what regular expression pattern matches routes like /ab?cd?

Accepted Answer

The 'b' and 'd' characters are optional

Answer

The 'a' and 'c' characters are optional

Answer

The entire path is optional

Answer

The path requires exactly one of each character

Question 4

What happens when you pass a string pattern '/ab*cd' as an Express route path?

Accepted Answer

It matches /abcd, /abXcd, /ab123cd, etc.

Answer

It only matches /abcd exactly

Answer

It matches any path starting with /ab

Answer

It throws a syntax error

Question 5

Which property of the request object contains the query string parameters parsed as an object?

Accepted Answer

req.query

Answer

req.params

Answer

req.search

Answer

req.qs

Question 6

How do you define a catch-all route that handles any path not matched by previous routes?

Accepted Answer

app.use('*', handler) or app.get('*', handler) placed last

Answer

app.default(handler)

Answer

app.fallback(handler)

Answer

app.catch(handler)