Describe How to Troubleshoot Location Precedence and Add_header Inheritance F5N4 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Given the following configuration, which response header will be present for requests to /api/data?

   • ANeither header
   • BBoth X-Server: nginx and X-API-Version: 1
   • CX-API-Version: 1
   • DX-Server: nginx
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2. 7foundation · easy

   A response is missing a custom header that was defined in the http block. The location block also defines an add_header directive. What is the most likely cause?

   • AThe http block's add_header is not inherited because it is not in the server block.
   • BThe header is being removed by a proxy_pass response.
   • CThe header is defined after the location block in the configuration.
   • DThe location block's add_header overrides the http block's add_header.
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4. 8expert · hard

   An NGINX server is configured with add_header X-Frame-Options "SAMEORIGIN" at the http level. A server block for example.com has add_header X-Content-Type-Options "nosniff". A location block for /api/ has add_header X-Request-ID "$request_id" and add_header Cache-Control "no-store". A developer reports that responses from /api/ do not include X-Frame-Options or X-Content-Type-Options. What is the most likely cause?

   • AThe server block's add_header directive overrides the http-level add_header, so X-Frame-Options is not inherited.
   • BThe location block's add_header directives are not inherited from the server block because they are in a different context.
   • CThe add_header directives in the location block override all inherited add_header directives.
   • DThe headers are not sent because the response is a JSON API response and NGINX strips security headers.
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5. 9foundation · easy

   Which debugging technique can help you determine which location block NGINX selected for a request?

   • AUse the 'nginx -t' command to test the configuration.
   • BCheck the access log for the 'location' field.
   • CEnable the debug log and check the 'using configuration' message.
   • DRun 'curl -v' to see the response headers.
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6. 10expert · hard

   An NGINX server has the following locations: location /app/ { proxy_pass http://backend; }, location ~ ^/app/.*\.php$ { return 200 "php"; }, and location ^~ /app/static/ { return 200 "static"; }. A request for /app/static/script.php is made. Which location handles the request?

   • Alocation ~ ^/app/.*\.php$
   • Blocation ^~ /app/static/
   • CNo location matches, so NGINX returns a 404.
   • Dlocation /app/
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