14. What is the best way to avoid interference for your IEEE 802.11 WLAN? a. Channel selection b. Antenna selection c. Data rate selection d. SSID selection 15. One of the reasons that 802.11n achieves a higher bandwidth is that it bonds two ISM or U-NI channels. Another important reason is that it a. climinates multipath interference b. uses antenna diversity c. can transmit using multiple spatial streams d. can transmit in any two frequency channels simultancously 16. When actively using a network while roaming in an ESS, the process of connecting and disconnecting from the APs in one's path is called a. MIMO b. handoff c. switching d. nomadic 17. The change the 802.1le amendment made to the MAC layer to enable WLAN traffic to be prioritized is called a. RSNA b. QoS c. VoWLAN d. WPA2 18. Which of the following is one of the most important reasons that companies deploy wireless controllers? a. It enables bridging of multiple WLANs. b. It enhances security c. It simplifies management of the WLAN. d. Wireless controllers support TKIIP 19. Which of the following is the best method for enhancing WLAN security in an enterprise? a. using TKIP and WEP b. deploying an authentication server on the network c. changing frequencies periodically installing equipment that supports 802.11s