How does opportunistic key caching speed up the roaming process?

Question

Options

• AWhen SNR of a station begins to drop, it pre-authenticates with neighboring APs, which cache the pair wise master key of the station for a user-defined amount.
• BWhen a station authenticates, the AP sends encryption keys to the controller, which distributes them to all APs in the mobility domain.
• CWhen a station decides to roam, it notifies its AP, which then distributes the pair wise master key of the stations to APs in its mobility domain.
• DAfter a station authenticates with an AP, it pre-authenticates with neighboring APs, which cache the pair wise master key in case the station later roams.

• A
  3% (1)
• B
  83% (33)
• C
  5% (2)
• D
  10% (4)

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