Which of the following should the technician perform to ensure another cannot be placed on the network?

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A network technician has discovered a rogue access point under an empty cubicle desk.

Which of the following should the technician perform to ensure another cannot be placed on the network?
A . Disable unused ports on switches
B . Enable DHCP guard to detect rogue servers
C . Configure WPA2 on all access points
D . Use TACACS+ authentication

Answer: B