单选题The Company security administrator wants to prevent DHCP spoofing. Which statement is true about DHCP spoofing operation？（）A DHCP spoofing and SPAN cannot be used on the same port of a switch.B To prevent a DHCP spoofing， the DHCP server must create a static ARP entry that cannot be updated by a dynamic ARP packet.C To prevent a DHCP spoofing， the switch must have DHCP server services disabled and a static entry pointing towards the DHCP server.D DHCP spoofing can be prevented by placing all unused ports in an unused VLAN.E None of the other alternatives apply.
单选题
The Company security administrator wants to prevent DHCP spoofing. Which statement is true about DHCP spoofing operation？（）
A
DHCP spoofing and SPAN cannot be used on the same port of a switch.
B
To prevent a DHCP spoofing， the DHCP server must create a static ARP entry that cannot be updated by a dynamic ARP packet.
C
To prevent a DHCP spoofing， the switch must have DHCP server services disabled and a static entry pointing towards the DHCP server.
D
DHCP spoofing can be prevented by placing all unused ports in an unused VLAN.
E
None of the other alternatives apply.
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