Which of the following is the BEST way to prevent new users from connecting to a wireless access
point, but still allow already connected users to continue to connect?
A.
Create a MAC filter containing the current users.
B.
Turn off SSID broadcast.
C.
Change the encryption type to AES 256-bit for current users.
D.
Reduce the signal strength to 0 percent.
Turning the SSID broadcast off would work if the new users have no knowledge that the ssid existed in the first place.
The question is asking for the BEST way to prevent new users from connecting. Security through obscurity should always be avoided.