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A network engineer configures port security and 802.1x on the same interface. Which option describes what this configuration allows?
Correct Answer: A
Explanation/Reference: Explanation: 802.1X and Port Security You can configure port security and 802.1X on the same interfaces. Port security secures the MAC addresses that 802.1X authenticates. 802.1X processes packets before port security processes them, so when you enable both on an interface, 802.1X is already preventing inbound traffic on the interface from unknown MAC addresses. Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/4_1/nx-os/security/configuration/ guide/sec_nx-os-cfg/sec_portsec.html