多项选择题
A. SW1#show swithport port-security interface FastEthernet 0/12
B. SW1# show swithport port-secure interface FastEthernet 0/12
C. SW1# show port-secure interface FastEthernet 0/12
D. SW1#show running-config
E. SW1#show port-security interface FastEthernet 0/12
多项选择题 In an Ethernet network, under what two scenarios can devices transmit?（）
多项选择题 By default, each port in a Cisco Catalyst switch is assigned to VLAN1. Which two recommendations are key to avoid unauthorized management access?（）
多项选择题 Which of the following correctly describe steps in the OSI data encapsulation process?（）