After entering the following information into a SOHO wireless router, a mobile device’s user reports being
unable to connect to the network:
PERMIT 0A: D1: FA. B1: 03: 37
DENY 01: 33: 7F: AB: 10: AB
Which of the following is preventing the device from connecting?

A.
WPA2-PSK requires a supplicant on the mobile device.

B.
Hardware address filtering is blocking the device.

C.
TCP/IP Port filtering has been implemented on the SOHO router.

D.
IP address filtering has disabled the device from connecting.

Explanation:
MAC filtering allows you to include or exclude computers and devices based on their MAC address.
Incorrect Answers:
A: WPA2-PSK is used to encrypt a network using a plain-English passphrase between 8 and 63 characters
long.
C, D: The information entered into the SOHO wireless router are MAC addresses, therefore these options
are not valid.

https://technet.microsoft.com/en-us/magazine/ff521761.aspx
http://www.webopedia.com/TERM/W/WPA2_PSK.html