Describe NGINX as a Caching Solution F5N1 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   Which factor directly affects the cache hit ratio in NGINX?

   • AThe size of the client's internet connection
   • BThe variety of cache keys used for requests
   • CThe number of worker processes
   • DThe type of operating system running NGINX
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   An NGINX caching proxy serves a news website. When an article is updated, the team needs to ensure that the updated content is served immediately. They do not have the ngx_cache_purge module installed. What is a practical approach to invalidate the cached article?

   • ARestart NGINX to clear the cache.
   • BChange the cache key for that URL.
   • CWait for the cache_valid time to expire.
   • DUse proxy_cache_bypass with a special header to force a refresh for that URL.
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Which NGINX caching mechanism is used to cache responses from a backend server accessed via HTTP?

   • AFastCGI caching
   • BMemcached caching
   • CuWSGI caching
   • DProxy caching
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   What is the default cache key used by NGINX when caching proxy responses?

   • AThe request's HTTP method only
   • BThe response's Content-Type header
   • CThe full URL of the request, including scheme, host, and URI
   • DThe client's IP address
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   An NGINX reverse proxy caches responses from an upstream API. The API returns personalized content based on the Authorization header. The team notices users are seeing each other's cached responses. What is the most likely cause and fix?

   • AThe proxy_cache directive is missing; add proxy_cache to the location.
   • BThe cache key does not include the Authorization header; add it to the cache key.
   • CThe cache_valid directive is set too long; reduce it to expire entries sooner.
   • DThe proxy_cache_path uses a shared memory zone that is too small; increase the keys_zone size.
   Reveal Solution Discussion Select an answer first