Fastify quiz

Test your Fastify knowledge with a free interactive quiz — 48 questions with answers and explanations. No signup needed to play.

What does `fastify.close()` do?

1. What does `fastify.close()` do?
2. How do you start listening for requests on port 3000 in Fastify?
3. How do you register a basic GET route in Fastify?
4. What is the primary purpose of attaching a JSON Schema to a Fastify route?
5. What does the querystring schema in a Fastify route definition validate?
6. What is the purpose of `reply.header('Cache-Control', 'no-store')` in a Fastify handler?
7. What is Fastify?
8. How do you define a route that only accepts POST requests to `/orders`?
9. What object gives access to route parameters like `:id` in a Fastify handler?
10. What is the correct way to read a custom request header, e.g. `x-api-key`, in a Fastify handler?
11. What plugin/hook type would you use to run authentication logic before every route handler in a specific plugin scope?
12. How does Fastify's default JSON body parser make the parsed body available to a handler?

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