200-901 Question #475: Real Exam Question with Answer & Explanation

Question

Package updates from a local server are failing to download. The same updates work when a much slower external repository is used. The server has the configuration: - hostname: devbox111012120 - IP: 192.168.1.51 - Mask: 255.255.255.0 Why are local updates failing?

Options

• AThe Internet is down at the moment, which causes the local server to not be able to respond.
• BThe Internet connection is too slow.
• CThe server is running out of disk space.
• DThe update utility is trying to use a proxy to access the internal resource.

Explanation

{"question_number": 1, "correct_answer": "D", "explanation": "When a proxy server is configured on a system, all HTTP/HTTPS traffic-including requests to local/internal servers-is routed through that proxy. Proxy servers are designed for external internet access, not internal network resources. The local server at 192.168.1.51 is a private RFC 1918 address, and the proxy likely cannot reach it or actively blocks internal IP ranges. The fact that the slower external repository works confirms internet connectivity is fine, ruling out options A and B. Disk space (C) would cause failures on both repositories. The fix is to add the local server's IP or hostname to the proxy bypass list (e.g., the NO_PROXY environment variable).", "generated_by": "claude-sonnet", "llm_judge_score": 3}

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