Question: 9 . Although not defined by the 8 0 2 . 1 1 - 2 0 1 2 standard, which of these methods of fast

9. Although not defined by the 802.11-2012 standard, which of these methods of fast secure roaming is supported by the majority of WLAN vendors?
A. PMK caching
B. Preauthentication
C. Opportunistic key caching
D. Over-the-air fast BSS transition

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