Maria enables port security on the switches on her network. What type of attack is she most likely trying to prevent?

Maria is most likely trying to prevent content addressable memory (CAM) table or MAC address table flooding by preventing large numbers of MAC addresses from being used on a single port. If CAM table flooding is successful, switches will not know where to send traffic and resort to sending all traffic to every port, potentially exposing traffic to attackers. IP spoofing and VLAN hopping are not prevented by port security, which focuses on hardware (MAC) addresses. MAC aggregation was made up for this question.