多项选择题
A. NAT protects network security because private networks are not advertised.
B. NAT accelerates the routing process because no modifications are made on the packets.
C. Dynamic NAT facilitates connections from the outside of the network.
D. NAT facilitates end-to-end communication when IPsec is enable.
E. NAT eliminates the need to re-address all host that require extemal access.
F. NAT conserves addresses through host MAC-level multiplexing.
多项选择题 Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch?（）
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?（）