What are two primary purposes of Layer 2 detection in Cisco IPS networks? (Choose two.)

What are two primary purposes of Layer 2 detection in Cisco IPS networks? (Choose two.)
A . identifying Layer 2 ARP attacks
B . detecting spoofed MAC addresses and tracking 802.1X actions and data communication after a successful client association
C . detecting and preventing MAC address spoofing in switched environments
D . mitigating man-in-the-middle attacks

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Answer: A,D