Explain What Is Unique to NGINX as a Web Server F5N2 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A startup is deploying a public-facing web service on a single VM with only 1 GB of RAM. They expect up to 10,000 concurrent connections, mostly idle keep-alive connections. The team is comparing NGINX with a traditional Apache configuration that uses a process-per-connection model. Which architectural property of NGINX makes it the better fit for this constraint?

   • ANGINX uses an asynchronous, event-driven model where a single worker can handle many connections without blocking, keeping memory usage low.
   • BNGINX forks a new process for each incoming connection, ensuring isolation and predictable memory usage per connection.
   • CNGINX uses a thread-per-connection model with a shared memory pool, reducing overhead compared to processes but still scaling linearly.
   • DNGINX caches all responses in memory by default, eliminating the need for disk I/O and reducing memory pressure.
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2. 12expert · hard

   An administrator is tuning an NGINX server to handle a large number of concurrent connections. They have set `worker_connections` to 1024 and `worker_processes` to 4. What is the maximum number of concurrent connections the server can handle?

   • AUnlimited, because NGINX uses event-driven architecture.
   • B4
   • C1024
   • D4096
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4. 13foundation · easy

   In NGINX's process model, what is the role of the master process?

   • AIt handles client requests directly and performs all I/O operations.
   • BIt manages worker processes, reads configuration, and performs privileged operations like binding to ports.
   • CIt acts as a load balancer distributing requests to backend servers.
   • DIt caches static content in memory for faster delivery.
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5. 14expert · hard

   A company is designing a new architecture for a microservices application. They want NGINX to act as an API gateway, routing requests to different backend services based on the URL path. They also need to handle a high volume of WebSocket connections. Which NGINX feature set is essential for this?

   • A`rewrite` rules and `return` directives to redirect clients to the appropriate backend.
   • B`alias` and `try_files` to serve static files from different directories.
   • C`location` blocks with `proxy_pass` and the `Upgrade` and `Connection` headers for WebSocket proxying.
   • D`stub_status` and `access_log` to monitor traffic and route based on logs.
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6. 15application · medium

   A DevOps engineer is comparing NGINX and a traditional thread-based web server for a high-traffic API gateway. The gateway must handle 50,000 concurrent connections with a limited memory budget. Which characteristic of NGINX directly enables this level of concurrency with low memory usage?

   • ANGINX uses a fixed number of worker processes, each handling many connections asynchronously via event loops.
   • BEach connection is handled by a separate worker process, providing isolation and predictable memory usage.
   • CNGINX caches all connection state in a shared memory zone, reducing per-connection overhead.
   • DNGINX uses a thread pool to handle each connection with minimal stack size.
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