If the function succeeds the return value will be the network adapter accessibility status.
Description:
Use AdpCfgGetAccessibleState to get the network adapter accessibility status. If AccessibleState = FALSE,
the network adapter is unplugged or its data from the system registry does not match to the current hardware
configuration.
If AdpCfgGetAccessibleState returns TRUE, the network adapter is accessible and you can open it by the
AdpOpenAdapter function call.