单项选择题
A. Discards ARP packets with invalid IP-to-MAC address bindings on trusted ports
B. Validates outgoing ARP requests for interfaces configured on VLAN 10， 11， 12， or 15
C. Intercepts， logs， and discards ARP packets with invalid IP-to-MAC address bindings
D. Intercepts all ARP requests and responses on trusted ports
E. None of the other alternatives apply
多项选择题 As the network technician at Company， you need to configure DHCP snooping on a new switch. Which three steps are required？ （）
多项选择题 In the use of 802.1X access control， which three protocols are allowed through the switch port before authentication takes place？ （）
多项选择题 The DAI feature has been implemented in the Company switched LAN. Which three statements are true about the dynamic ARP inspection （DAI） feature？ （）