Why rate limiting prevents abuse in Nginx - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the rate limit zone name to 'mylimit'.

Nginx

limit_req_zone $binary_remote_addr zone=[1]:10m rate=1r/s;

Drag options to blanks, or click blank then click option'

Amylimit

Bzone1

Climit

Daddrlimit

Attempts:

3 left

💡 Hint

Common Mistakes

Using a reserved word like 'limit' as the zone name.

The zone name 'mylimit' is used to identify the shared memory zone for rate limiting.

2fill in blank

medium

Complete the code to apply the rate limit using the zone 'mylimit'.

Nginx

limit_req zone=[1] burst=5 nodelay;

Drag options to blanks, or click blank then click option'

Amylimit

Bzone1

Climit

Daddrlimit

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different zone name than defined.

The 'limit_req' directive uses the zone name defined earlier to apply the rate limit.

3fill in blank

hard

Fix the error in the rate limit directive to correctly limit requests to 10 per second.

Nginx

limit_req_zone $binary_remote_addr zone=mylimit:10m rate=[1];

Drag options to blanks, or click blank then click option'

A10/s

B10r/s

C10rps

D10requests

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting 'r/s' or using incorrect units like '10/s'.

The correct syntax for rate is '10r/s' meaning 10 requests per second.

4fill in blank

hard

Fill both blanks to limit requests from the same IP to 5 per second with a burst of 10.

Nginx

limit_req_zone $binary_remote_addr zone=mylimit:10m rate=[1];
limit_req zone=mylimit burst=[2] nodelay;

Drag options to blanks, or click blank then click option'

A5r/s

B10r/s

C5

D10

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing rate and burst values or units.

The rate is set to '5r/s' for 5 requests per second, and burst is set to 10 to allow short bursts.

5fill in blank

hard

Fill all three blanks to create a rate limit zone named 'limitzone' with 20MB memory, limit 15 requests per second, and apply it with burst 20.

Nginx

limit_req_zone $binary_remote_addr zone=[1]:[2] rate=[3];
limit_req zone=limitzone burst=20 nodelay;

Drag options to blanks, or click blank then click option'

Alimitzone

B15r/s

C20m

D10m

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong memory size units or wrong rate format.

The zone name is 'limitzone', memory size is '20m' (20 megabytes), and rate is '15r/s' for 15 requests per second.