Your site has already been surveyed at 5 GHz for 802.11n VoWLAN services. Which services can you add safely, without conducting an additional site survey? (Choose two.) 

Answer options:

A. enhanced Layer 2 or Layer 3 security of the WLAN
B. optional MFP client protection for Cisco Client Extensions Version 5 clients
C. 802.11n data services on the 2.4 GHz Frequency
D. 802.11n voice services on the 2.4 GHz Frequency
E. new services (such as location) on both frequencies

AB