APIs, Auth & Data — Chapter Quiz

Question 1

1

Where does middleware live in an App Router project?

Aapp/middleware.tsBmiddleware.ts at the project root (or in src/)Capp/api/middleware.tsDAnywhere with a 'middleware' directive

A single middleware.ts at the project root (or src/middleware.ts) runs on the Edge for matching requests.

Question 2

2

Which response do you return to continue to the destination route from middleware?

ANextResponse.next()BNextResponse.redirect(...)CNextResponse.rewrite(...)DResponse.continue()

next() says "keep going". redirect sends the browser to a new URL; rewrite serves a different route under the same URL.

Question 3

3

You can write cookies from a Server Component.

TTrueFFalse

Server Components have no response object to attach cookies to. Write cookies from Route Handlers or Server Actions.

Question 4

4

Which library is the official auth solution previously known as NextAuth?

ALuciaBClerkCAuth.jsDPassport

Auth.js is the rename for NextAuth — same library, broader scope. It plugs into App Router with one catch-all handler.

Question 5

5

Why import 'server-only' at the top of lib/db.ts?

AIt makes the file run fasterBIt guarantees the build fails if a Client Component imports the fileCIt enables top-level awaitDIt marks the file as a Server Action

'server-only' is build-time insurance against accidentally bundling server code (DB clients, secrets) into the client.

Question 6

6

Which runtime gives you the smallest cold start and is closest to your users, at the cost of a Node API subset?

ANode runtimeBEdge runtimeCBun runtimeDDeno runtime

Edge is a V8 sandbox with Web Standards APIs. Fast cold starts, deployable to CDN PoPs, no fs/child_process.

Question 7

7

To return a streaming response from a Route Handler, return a _______Stream inside the Response body.

new ReadableStream({...}) lets you enqueue chunks asynchronously and stream them to the client without buffering.

Question 8

8

Which of these are popular ORM choices in the Next.js ecosystem?

Select all that apply.

APrismaBDrizzleCSequelizeDHibernate

Prisma and Drizzle are the two most common; Sequelize is also used. Hibernate is a Java ORM — not JS.

Test what you learned.