Correct Answer. C. Conduct a systematic observation to assess if the new configuration correlates with the increase in errors Conducting a systematic observation helps the technician understand if the new firewall settings are directly causing the connectivity issues, and if so, what specific settings might be responsible. This measured approach allows for targeted adjustments rather than broad, potentially disruptive actions.
Option A is incorrect as disabling the firewall could compromise network security and is not a considered troubleshooting step.
Option B is incorrect because increasing security settings might exacerbate existing connectivity issues without addressing the root cause.
Option D is incorrect as suggesting users troubleshoot connection issues themselves does not address the potential configuration problem and can lead to increased frustration and downtime.