A network administrator suspects that a network issue is related to an incorrect configuration on a newly deployed router. After interviewing users and identifying the symptoms, the administrator has established a theory. What is the BEST next step to confirm if their theory about the router's configuration is the cause of the issue?
Implement the suspected configuration changes on a test router or in a controlled segment of the network.
Replace the router with a different model to determine if the issue resolves.
Reboot the router to see if the problem persists.
Analyze the router's log files for error messages.
The best step after forming a theory is to test the theory to determine the cause. This is often done by simulating or recreating conditions under controlled environments to see if the issue can be replicated and thus confirm the theory. By testing the configuration changes in a controlled manner, the administrator can verify if the changes resolve the issue without affecting the production environment. Analyzing logs may provide useful information but does not directly test the theory. Rebooting the device or replacing the router are premature actions without confirming the theory first.
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What are the benefits of testing configuration changes on a test router?
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What does it mean to analyze router log files?
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Why is rebooting the router not the best initial troubleshooting step?