Describe the Why and How of Caching in NGINX F5N2 Practice Questions (Page 5)

Questions 21–23

1. 21expert · medium

   An NGINX cache is configured with `proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=my_cache:10m max_size=1g;`. The cache reaches its maximum size. What will NGINX do?

   • AIncrease the `max_size` automatically to accommodate new responses.
   • BStop caching new responses until space is freed manually.
   • CRemove the least recently used cached responses to make room for new ones.
   • DReturn an error for requests that would require caching a new response.
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   Why is it important that the cache key uniquely identifies a cached response?

   • ATo allow NGINX to compress the cached response more efficiently
   • BTo enable NGINX to authenticate clients before serving cached content
   • CTo ensure that different requests do not accidentally share the same cached response
   • DTo determine how long the response should be cached
   Reveal Solution Discussion Select an answer first
3. 23application · medium

   An NGINX cache is configured with `proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=my_cache:10m;`. What is the purpose of the `keys_zone` parameter?

   • AIt defines the in-memory shared memory zone that stores cache keys and metadata for fast lookups.
   • BIt specifies the maximum size of the cache on disk.
   • CIt sets the expiration time for cached responses.
   • DIt determines the directory structure for storing cached files on disk.
   Reveal Solution Discussion Select an answer first