Your customer is very concerned about security for Wi-Fi at his home. He wants to make sure that
only computers, he has authorized, can get on his Wi-Fi. What is the most appropriate security
measure you can recommend?

A.
A Firewall

B.
WPA encryption

C.
Mac Filtering

D.
WEP encryption

Explanation:

Mac filtering only allows computers, which have their MAC address listed with the router, to
connect.
What is MAC address filtering?
MAC address filtering is a security method that enables a device to allow only certain MAC addresses
to access a network. It can be configured on a Wireless Access Point (WAP) to allow only certain
system MAC addresses to communicate with the rest of the network.
MAC address filtering can be performed using either of the two policies. exclude all by default, then
allow only listed clients; or include all by default, then exclude listed clients. MAC filtering can also
be used on a wireless network to prevent certain network devices from accessing the wireless
network. MAC addresses are allocated only to hardware devices, not to persons.
Answer options D and B are incorrect. Any encryption will be based on password authentication, not
on filtering specific computers. Only MAC filtering will do that.
Answer option A is incorrect. A firewall will not prevent people or computers from connecting to
your Wi-Fi. It will block certain, unwanted connections.
Reference. http.//compnetworking.about.com/cs/wirelessproducts/qt/macaddress.htm