HTTP/2 configuration in Nginx - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is HTTP/2 and why is it important in web servers like nginx?

HTTP/2 is a newer version of the HTTP protocol that makes websites load faster by allowing multiple requests at the same time over one connection. It improves speed and efficiency compared to HTTP/1.1.

beginner

How do you enable HTTP/2 in an nginx server block?

Add the keyword http2 to the listen directive in your server block, for example: <br>listen 443 ssl http2;

intermediate

Why must SSL/TLS be enabled to use HTTP/2 in nginx?

Most browsers require HTTP/2 to run over a secure connection (HTTPS). So nginx must have SSL/TLS configured to use HTTP/2.

intermediate

What is the purpose of the ssl_certificate and ssl_certificate_key directives in nginx HTTP/2 configuration?

They specify the paths to your SSL certificate and private key files. These files enable encrypted connections needed for HTTP/2.

beginner

How can you verify that HTTP/2 is working on your nginx server?

Use browser developer tools or online tools to check the protocol used. You can also run curl -I --http2 https://yourdomain.com to see if HTTP/2 is active.

Which directive enables HTTP/2 in an nginx server block?

A http2_enable on;

B enable_http2 true;

C listen 443 ssl http2;

D protocol http2;

The correct way to enable HTTP/2 is by adding 'http2' to the listen directive, like 'listen 443 ssl http2;'.

Why is SSL/TLS required for HTTP/2 in nginx?

A Because browsers require HTTP/2 over secure connections

B Because HTTP/2 only works on port 80

C Because nginx does not support HTTP/2 without SSL

D Because SSL/TLS speeds up HTTP/2

Browsers require HTTP/2 to be used over HTTPS, so SSL/TLS must be enabled.

Which command can you use to check if your nginx server supports HTTP/2?

A nginx -t --http2

B curl -I --http2 https://yourdomain.com

C curl --http1.1 https://yourdomain.com

D nginx -v http2

The curl command with --http2 option checks if the server supports HTTP/2.

What files must be specified to enable SSL for HTTP/2 in nginx?

A ssl_key and ssl_cert

B http2_certificate and http2_key

C tls_certificate and tls_key

D ssl_certificate and ssl_certificate_key

The directives ssl_certificate and ssl_certificate_key specify the SSL certificate and key files.

What is a main benefit of HTTP/2 over HTTP/1.1?

A Allows multiple requests over one connection

B Uses less secure connections

C Requires more server memory

D Only works with IPv6

HTTP/2 allows multiplexing multiple requests on a single connection, improving speed.

Explain how to configure HTTP/2 in nginx including SSL setup.

Think about the server block and secure connection requirements.

Describe how you can verify that HTTP/2 is active on your nginx server.

Use simple command line tools or browser features.