Explain What Is Unique to NGINX as a Cache Server F5N2 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   When NGINX has a stale cached response and the origin server returns a 304 Not Modified status during revalidation, what does NGINX do?

   • AIt serves the stale cached response and updates its freshness information
   • BIt discards the cached response and fetches a fresh one from the origin
   • CIt removes the cached response and retries the request
   • DIt returns the 304 status to the client
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   What architectural feature of NGINX contributes to its efficiency as a cache server compared to traditional thread-based servers?

   • AEvent-driven, asynchronous processing
   • BDedicated hardware acceleration
   • CMulti-threaded request handling
   • DBuilt-in database storage
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4. 13foundation · easy

   What is the simplest method to manually purge a cached item in NGINX?

   • ADelete the corresponding file from the cache directory
   • BRestart the NGINX service
   • CSend a `Cache-Control: no-cache` header to the origin
   • DUse the `proxy_cache_purge` directive
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A system administrator notices that NGINX cache performance degrades over time. The cache is stored on a disk that is nearly full. They have set proxy_cache_path to use a specific directory. What is the most likely cause of the performance degradation?

   • AThe NGINX worker processes are not enough to handle cache lookups.
   • BThe proxy_cache_valid is set too high, causing stale content.
   • CThe cache is evicting entries frequently because the disk is full, causing more origin requests.
   • DThe cache key is too long, causing memory issues.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A startup is comparing caching solutions for their microservices architecture. They need a cache that can be tightly integrated with their reverse proxy, support custom cache keys, and handle high concurrency with low overhead. They are considering NGINX and a standalone cache like Varnish. What is a key advantage of NGINX in this scenario?

   • ANGINX automatically purges cache entries when the origin changes.
   • BNGINX uses a thread-per-connection model that scales better than event-driven models.
   • CNGINX can act as both a reverse proxy and a cache, simplifying the architecture.
   • DNGINX provides a built-in cache clustering feature for distributed caching.
   Reveal Solution Discussion Select an answer first