What two items need to be supported on the VoWLAN phones in order to take full advantage of this WLAN configuration?

Refer to Exhibit.

What two items need to be supported on the VoWLAN phones in order to take full advantage of this WLAN configuration? (Choose two.)
A . APSD
B . 802.11a
C . 802.11e
D . WMM
E . 802.11r
F . SIFS

View Answer

Answer: C,D