Modify or Tune a Memory Zone Configuration F5N2 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   What is a common symptom that a rate-limiting memory zone is too small?

   • ANGINX returns a 502 Bad Gateway error
   • BNGINX automatically disables rate limiting
   • CNGINX logs an error about insufficient disk space
   • DNGINX returns a 503 Service Unavailable for some requests
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2. 7application · medium

   An NGINX administrator is explaining to a colleague why a memory zone is needed for rate limiting. The colleague asks: 'Why can't we just use a regular variable to track request counts?' Which response correctly explains the role of the memory zone?

   • AMemory zones are faster than variables because they are stored in kernel memory.
   • BMemory zones are required to store the rate limit value itself.
   • CMemory zones are shared across worker processes, allowing consistent rate limiting state.
   • DMemory zones are used to store the access logs for rate-limited requests.
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4. 8application · medium

   An administrator is reviewing an NGINX configuration and finds the following directive: `limit_req_zone $binary_remote_addr zone=api_limit:10m rate=10r/s;`. The administrator wants to change the zone to track requests by a custom header instead of the client IP address. What must be modified in the directive?

   • AChange the zone name from `api_limit` to `header_limit`.
   • BReplace `$binary_remote_addr` with the custom header variable.
   • CModify the `rate` parameter to a higher value.
   • DAdd a `limit_req` directive with the new key in the location block.
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5. 9foundation · easy

   Which NGINX feature typically relies on a memory zone to function correctly?

   • AAccess logging
   • Bgzip compression
   • CRate limiting
   • DSSL certificate loading
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6. 10foundation · easy

   In the directive `proxy_cache_path /data/cache levels=1:2 keys_zone=mycache:10m max_size=1g;`, what does `keys_zone=mycache:10m` define?

   • AThe number of levels in the cache directory hierarchy
   • BThe name of the cache directory and its maximum size
   • CThe maximum size of a single cached response
   • DThe name and size of the shared memory zone used to store cache keys and metadata
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