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

A. Configure the switch to insert and remove DHCP relay information （option-82 field） in forwarded  DHCP request messages.
B. Configure DHCP snooping globally.
C. Configure the switch as a DHCP server.
D. Configure DHCP snooping on an interface.
E. Configure all interfaces as DHCP snooping trusted interfaces.
F. Configure DHCP snooping on a VLAN or range of VLANs.