Which Layer 2 security feature on a switch limits the number of MAC addresses allowed on a port to prevent MAC address flooding attacks?
Dynamic ARP Inspection
BPDU guard
DHCP snooping
Port security
Port security is the Layer 2 feature that allows administrators to restrict input to an interface by limiting the MAC addresses allowed to access the port. By specifying a maximum number of MAC addresses per port, it helps prevent MAC address flooding attacks, where an attacker attempts to overwhelm the switch's MAC address table with bogus MAC addresses. DHCP snooping is used to prevent unauthorized DHCP servers from providing incorrect IP information. BPDU guard protects the network from invalid configurations by shutting down ports receiving unexpected BPDUs. Dynamic ARP Inspection prevents ARP spoofing attacks by verifying ARP packets.
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