Describe NGINX as a Reverse Proxy F5N1 Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   An organization is deploying NGINX as a reverse proxy for a high-traffic application. They want to protect the backend servers from being overwhelmed by too many requests from a single client. They also want to allow normal traffic from all other clients. What is the most appropriate NGINX feature to implement?

   • ARate limiting using the limit_req_zone and limit_req directives.
   • BLoad balancing using the least_conn directive.
   • CCaching using the proxy_cache directive.
   • DAccess control using the allow and deny directives.
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2. 7foundation · easy

   When NGINX is configured as a reverse proxy, what does it do with a client request for a backend resource?

   • AIt modifies the request to include the client's IP address and then sends it to the backend.
   • BIt terminates the connection and returns a 404 if the backend is busy.
   • CIt serves the request directly from its own cache without contacting the backend.
   • DIt forwards the request to the configured upstream server and returns the response to the client.
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4. 8application · medium

   A security-conscious company wants to protect their backend application servers from direct external access. They have configured NGINX as a reverse proxy. What additional configuration is needed on the backend servers to ensure clients can only reach them through NGINX?

   • AConfigure the backend servers to listen on a non-standard port.
   • BConfigure a firewall on the backend servers to only allow traffic from the NGINX server's IP address.
   • CSet the proxy_redirect directive to rewrite the Location header in responses.
   • DEnable the proxy_set_header directive to pass the client's real IP address to the backend.
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5. 9application · medium

   A company runs a PHP application on two backend servers. They want to distribute incoming HTTP traffic evenly between the two servers and also want to hide the backend server IP addresses from external clients. What should they configure on a new NGINX server placed in front of the application servers?

   • AConfigure the two backend servers in an upstream block and use the return directive to send clients directly to them.
   • BConfigure a server block that uses the alias directive to map both backend servers to the same URI.
   • CConfigure a server block that uses the proxy_pass directive to forward requests to the first backend server only.
   • DConfigure an upstream block listing both backend servers and a server block that proxies requests to that upstream.
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6. 10foundation · easy

   An organization wants to distribute incoming HTTP traffic across multiple application servers to improve performance and availability. Which NGINX reverse proxy use case does this scenario represent?

   • ACaching
   • BSSL termination
   • CLoad balancing
   • DURL rewriting
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