What is the primary role of NGINX when configured as a caching solution?

To encrypt all traffic between clients and backend servers using TLS.

To store responses to client requests and serve them directly for subsequent matching requests, reducing the load on backend servers.

To load balance traffic across multiple backend servers to ensure high availability.

To compress responses before sending them to clients to reduce bandwidth usage.

An NGINX caching proxy serves content that is updated infrequently, but when it is updated, the team needs to remove the old cached version immediately. They have the ngx_cache_purge module installed. What is the simplest way to purge a specific cached item?

Use proxy_cache_bypass to force a refresh of the item.

Send a PURGE request to the cache server for the specific URL.

Restart NGINX to clear the entire cache.

Delete the cache directory manually from the filesystem.

An NGINX reverse proxy caches responses for a website. The team needs to ensure that requests from logged-in users (identified by a session cookie) are never served from cache. Which configuration achieves this?

Set proxy_cache off for the location serving logged-in users.

Set cache_valid 0 for responses with the session cookie.

Use proxy_cache_bypass $cookie_sessionid; to bypass the cache for requests with a session cookie.

Add the session cookie to the cache key using proxy_cache_key.

A company uses NGINX caching for a website. The cache hit ratio is high, but the origin still receives a significant number of requests. What is the most likely reason?

The cache_valid time is too long, causing stale content.

The proxy_cache_path is set to a slow disk.

Some requests are not cacheable, such as POST requests or requests with cookies.

The keys_zone is too large, wasting memory.

F5Certified Administrator NGINX

Domain 1Objective 4

Describe NGINX as a Caching Solution F5N1 Practice Questions (Page 6)

Part of the Given a scenario identify when to use NGINX domain, which makes up ~37% of our current practice bank. F5 does not publish an official question count, but from its 30-minute exam (~10–20 total, ~4–7 in this domain), expect 1–1 from this objective — we provide 29 practice questions to prepare you well beyond it. (estimate)

29questions here

6free pages

6concepts

Questions 26–29

26foundation · easy
What is the primary role of NGINX when configured as a caching solution?
Select an answer first
27application · medium
An NGINX caching proxy serves content that is updated infrequently, but when it is updated, the team needs to remove the old cached version immediately. They have the ngx_cache_purge module installed. What is the simplest way to purge a specific cached item?
Select an answer first
28application · medium
An NGINX reverse proxy caches responses for a website. The team needs to ensure that requests from logged-in users (identified by a session cookie) are never served from cache. Which configuration achieves this?
Select an answer first
29application · medium
A company uses NGINX caching for a website. The cache hit ratio is high, but the origin still receives a significant number of requests. What is the most likely reason?
Select an answer first

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