Which two fast roaming algorithms will allow a WLAN client to roam to a new AP and re-establish a new session key without a full reauthentication of the WLAN client? (Choose two.)
A. PMK
B. PTK
C. MIC
D. GTK
E. CKM
F. PKC
Which two fast roaming algorithms will allow a WLAN client to roam to a new AP and re-establish a new session key without a full reauthentication of the WLAN client?
Fast secure roaming
Fast roaming algorithms include Cisco Centralized Key Management (CCKM), Opportunistic Key Cache (OKC), and Proactive Key Caching (PKC). CCKM and PKC allow a WLAN client to roam to a new AP and reestablish a new session key, namely pairwise transient key (PTK), between the client and AP without requiring a full IEEE 802.1X or EAP reauthentication to a AAA/RADIUS server.
Both CCKM and PKC are Layer 2 roaming algorithms and therefore they do not consider any Layer 3 issues, such as IP address changes. In the Cisco Unified Wireless Network, the subnets are responsible to allocate IP addresses that originate at the WLC to the clients, and not the AP.
CKM=CCKM? and PKC=OKC?