A user replaces a laptop’s wireless PCMCIA card with a different vendor’s card. All of the new card configuration steps have been followed. The OS sees all known wireless networks but cannot connect to the user’s network.<br /> Which of the following is the MOST likely reason for this behavior?()
A、DMZ is enabled.
B、MAC filtering is enabled.
C、WEP is being used.
D、SSID broadcast is disabled.