Your friend lives in a large apartment complex and fears someone in the building has been accessing their wireless network to avoid paying service charges. They explain to you a large cable company installed the equipment and setup the wireless network using a predefined numeric pin. Upon further discovery, you are able to identify the encryption protocol as WEP. What wireless security enhancements would recommend to your friend? If your friend told you that they needed it as secure as possible so that they could work from home, what other security design elements could they implement. (e. g. signal strength, guard bands, frequency, access control…)