Describe NGINX as an API Gateway F5N1 Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   A company has a public API that must be highly available. They run NGINX in an active-passive pair with a floating IP. The team wants to ensure that if the active NGINX fails, the passive instance takes over without manual intervention. Which additional configuration is required?

   • AEnable proxy_cache on both NGINX instances to ensure data consistency.
   • BUse access_log on both instances to monitor for failures.
   • CConfigure keepalived to manage the floating IP and failover between the two NGINX instances.
   • DConfigure limit_req on both instances to balance the load.
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2. 7foundation · easy

   In which deployment scenario is NGINX as an API gateway a better choice than a cloud-native API gateway service?

   • AWhen the organization wants a fully managed service with automatic scaling
   • BWhen the organization must run the gateway on-premises due to data residency requirements
   • CWhen the organization wants to avoid any configuration and maintenance effort
   • DWhen the organization needs a service-level agreement (SLA) from the vendor for gateway uptime
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4. 8application · medium

   A mobile app backend exposes a REST API. The app sends requests with a version header (X-API-Version: 1 or 2). The backend has two separate services for each version, and the team wants NGINX to route requests to the appropriate service based on this header. Which NGINX feature should be used?

   • AUse sub_filter to rewrite the version header in the response.
   • BConfigure limit_req to rate-limit requests based on the version header.
   • CEnable gzip compression to reduce the size of versioned responses.
   • DUse the map module to set an upstream variable based on the X-API-Version header, then proxy_pass to the selected upstream.
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5. 9foundation · easy

   What is the primary role of an API gateway in a client-to-backend architecture?

   • ATo replace the need for any backend services by handling all requests directly
   • BTo compile and execute the business logic of backend services
   • CTo store and manage the database schemas used by backend services
   • DTo provide a single entry point that manages requests from clients to backend services
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6. 10foundation · easy

   Which statement best describes how an API gateway manages client-to-backend communication?

   • AIt intercepts client requests and forwards them to the appropriate backend service based on defined rules
   • BIt stores client credentials and backend service data in a central database
   • CIt requires clients to connect directly to each backend service individually
   • DIt only handles responses from backend services and does not process client requests
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