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N10-009 Domain 5: Network Troubleshooting

(Network+ pool) Supplemental troubleshooting item 2: which best practice improves reliability?

Multiple choice — select one answer

Answer choices

  1. a. Dirty connectors, bend radius, and optical power levels
  2. b. DNS and firewall rules for walled garden URLs
  3. c. Mis-scoped DHCP or relay pointing to old server
  4. d. Follow change control and monitor metrics

Architectural breakdown & explanation

Operational discipline reduces outages and misconfigurations.

Correct answer(s): d. Follow change control and monitor metrics

Exam domain: Domain 5: Network Troubleshooting (22% weight on the official guide).

Official documentation & study links

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