As shown in the figure, if you want to allow only legal users (users who obtain IP addresses through a legal DHCP server or specific static IP users) to access the network in the network, which of the following solutions can be used?

As shown in the figure, if you want to allow only legal users (users who obtain IP addresses through a legal DHCP server or specific static IP users) to access the network in the network, which of the following solutions can be used?

A . DAI+IPSG
B . DHCP Snooping+DAI
C . DAI+Port Security
D . DHCP Snooping+IPSG

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Answer: D