Which of the following is the best way to prevent an unauthorized user from plugging a laptop into an employee ' s phone network port and then using tools to scan for database servers?
Detailed Explanation:MAC filtering allows network administrators to control device access by specifying allowed MAC addresses. This prevents unauthorized devices, such as a laptop plugged into a network port, from gaining access. Reference: CompTIA Security+ SY0-701 Study Guide, Domain 2: Threats and Vulnerabilities, Section: " Network Access Control Methods " .
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