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The correct answer is B.

OBJ-3.3: The best option is MAC address reporting from a source device like a router or a switch. If the company uses a management system or inventory process to capture these addresses, then a report from one of these devices will show what is connected to the network even when they are not currently in the inventory. This information could then be used to track down rogue devices based on the physical port connected to a network device.

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