A high-traffic API experiences a 'thundering herd' problem when a cached response expires: hundreds of clients request the same resource simultaneously, overwhelming the backend. The team wants to ensure only one request goes to the backend at a time while others wait. Which directives should be added to the cache configuration?

proxy_cache_key "$request_uri";

What is the primary purpose of the proxy_cache_lock directive in NGINX?

To prevent the cache from being used for a specific set of requests

To prevent multiple requests for the same cache key from hitting the upstream simultaneously

To set a timeout for how long a cache entry remains valid

To lock the cache file so it cannot be modified by other processes

A news website caches article pages, but logged-in users must always see fresh content. The backend sets a cookie named 'session' for authenticated users. Which configuration ensures requests with this cookie bypass the cache?

proxy_cache_bypass $remote_user;

proxy_cache_bypass $http_cookie;

proxy_cache_bypass $arg_session;

proxy_cache_bypass $cookie_session;

An administrator wants each cached response to be identified by the request URI and the value of the 'Accept-Encoding' header. Which proxy_cache_key value accomplishes this?

$request_uri$http_accept_encoding

F5 Certified Administrator NGINX - Configuration:Knowledge

Domain 2Objective 5

Enable the Cache F5N2 Practice Questions (Page 1)

Part of the Configure NGINX as a content cache server domain, which makes up ~30% of our current practice bank. F5 does not publish an official question count, but from its 30-minute exam (~10–20 total, ~3–6 in this domain), expect 1–1 from this objective — we provide 13 practice questions to prepare you well beyond it. (estimate)

13questions here

3free pages

5concepts

Questions 1–5

1foundation · easy
What is the default value of the proxy_cache_key directive in NGINX?
Select an answer first
2application · medium
A high-traffic API experiences a 'thundering herd' problem when a cached response expires: hundreds of clients request the same resource simultaneously, overwhelming the backend. The team wants to ensure only one request goes to the backend at a time while others wait. Which directives should be added to the cache configuration?
Select an answer first
3foundation · easy
What is the primary purpose of the proxy_cache_lock directive in NGINX?
Select an answer first
4application · medium
A news website caches article pages, but logged-in users must always see fresh content. The backend sets a cookie named 'session' for authenticated users. Which configuration ensures requests with this cookie bypass the cache?
Select an answer first
5foundation · easy
An administrator wants each cached response to be identified by the request URI and the value of the 'Accept-Encoding' header. Which proxy_cache_key value accomplishes this?
Select an answer first

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Enable the Cache F5N2 Practice Questions (Page 1)

Questions 1–5

What is the default value of the proxy_cache_key directive in NGINX?

What is the primary purpose of the proxy_cache_lock directive in NGINX?

A news website caches article pages, but logged-in users must always see fresh content. The backend sets a cookie named 'session' for authenticated users. Which configuration ensures requests with this cookie bypass the cache?

An administrator wants each cached response to be identified by the request URI and the value of the 'Accept-Encoding' header. Which proxy_cache_key value accomplishes this?

Keep studying — Configure NGINX as a content cache server