Which description of Cisco Centralized Key Management is true?

Question

Options

• ABy caching their credentials, it helps clients save canning time when looking for a new AP to join.
• BIt enable the controller to send directed roam requests to a client in situations when the controller
• CIt allows wireless clients to cache their credentials so that, while they are roaming, they do not
• DIt allow the wireless infrastructure to cache the credentials, which eliminates the need to conduct

• B
  3% (1)
• C
  3% (1)
• D
  94% (33)

Explanation

Cisco Centralized Key Management (CCKM) is a Cisco-proprietary fast-roaming protocol that caches session keys on the wireless infrastructure (the WDS device or controller) rather than on the client. When a client roams to a new AP, the infrastructure already has the cached Pairwise Master Key (PMK) material, so a full 802.1X/EAP re-authentication to the RADIUS server is eliminated. This dramatically reduces roaming latency. It differs from client-side mechanisms (like PMKID caching or OKC) because the cache lives in the network, not the device. Options A and C describe client-side caching (closer to 802.11r/PMK caching behavior), option B describes directed roaming (a WLC load-balancing feature), and only option D correctly identifies that the infrastructure holds the cache.

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