Wireless Intrusion Prevention Systems (WIPS) are used for what purposes? (Choose 3)

As a part of a large organization's security policy, how should a wireless security professional address the problem of rogue access points?

Given: Your company has just completed installation of an IEEE 802.11 WLAN controller with 20 controller-based APs. The CSO has specified PEAPv0/EAP-MSCHAPv2 as the only authorized WLAN authentication mechanism. Since an LDAP-compliant user database was already in use, a RADIUS server was installed and is querying authentication requests to the LDAP server.
Where must the X.509 server certificate and private key be installed in this network?

While seeking the source of interference on channel 11 in your 802.11n WLAN running within 2.4 GHz, you notice a signal in the spectrum analyzer real time FFT display. The signal is characterized with the greatest strength utilizing only 1-2 megahertz of bandwidth and it does notuse significantly more bandwidth until it has weakened by roughly 20 dB. At approximately -70 dB, it spreads across as much as 35 megahertz of bandwidth.
What kind of signal is described?

ABC Company has deployed a Single Channel Architecture (SCA) solution to help overcome some of the common problems with client roaming. In such a network, all APs are configured with the same channel and BSSID. PEAPv0/EAP-MSCHAPv2 is the only supported authentication mechanism.
As the Voice over Wi-Fi (STA-1) client moves throughout this network, what events are occurring?