Which Layer 2 security feature restricts the number of MAC addresses that can be learned on a switch port to prevent unauthorized devices from accessing the network?
Port security
Dynamic ARP Inspection
Port-based authentication
Access Control Lists
Port security limits the number of MAC addresses that can be learned on a switch port, effectively preventing unauthorized devices from connecting to the network. It allows network administrators to control access by specifying which MAC addresses are allowed or by limiting the total number of addresses. Port-based authentication, such as IEEE 802.1X, authenticates devices before granting access but does not limit MAC addresses. Dynamic ARP Inspection (DAI) protects against ARP spoofing by verifying ARP packets. Access Control Lists (ACLs) filter traffic based on criteria like IP addresses and ports but do not restrict MAC addresses on a port.
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