IEEE 802.llk-2008 is an amendment to IEEE 80211- 2007 standard for radio resource management. A wireless engineer is designing a wireless network to support real time applications over wireless. Which IEEE protocol must the engineer enable on the WLC so that the number of packets that are exchanged between an access point and client are reduced and fast roaming occurs?
A. 802.11r
B. 802.11w
C. 802.11i
D. 802.11k
A
802.11r reduces the number of packets that are exchanged between the client and an AP. This means the roam itself occurs faster because the AP already has the client authentication credentials cached, resulting in fewer packets required between the client and the AP.
https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Mobility/RToWLAN/CCVP_BK_R7805F20_00_rtowlan-srnd/CCVP_BK_R7805F20_00_rtowlan-srnd_chapter_0101.html
A is the answer
I second Anon. it is A, 802.11r is fast transition roaming