200-901 · Question #255
200-901 Question #255: Real Exam Question with Answer & Explanation
The correct answer is A: reverse proxy. {"question_number": 5, "correct_answer": "A", "explanation": "A reverse proxy sits in front of multiple backend applications on the same host and routes incoming requests from a single public IP and port to the correct internal service based on rules such as URL path, hostname, o
Question
Which application should be used to externally access all applications deployed in the same host machine with a single public IP address and port, when each application listens on different local ports?
Options
- Areverse proxy
- Bload balancer
- CDNS
- Dfirewall
Explanation
{"question_number": 5, "correct_answer": "A", "explanation": "A reverse proxy sits in front of multiple backend applications on the same host and routes incoming requests from a single public IP and port to the correct internal service based on rules such as URL path, hostname, or headers. For example, requests to '/app1' can be routed to localhost:3001 and '/app2' to localhost:3002, even though all arrive on port 80 or 443. A load balancer distributes traffic across multiple instances of the same application, not different applications. DNS resolves domain names but cannot route a single IP:port to different local ports. A firewall controls access but does not perform application-level routing.", "generated_by": "claude-sonnet", "llm_judge_score": 4}
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