300-365 · Question #119
300-365 Question #119: Real Exam Question with Answer & Explanation
The correct answer is C: Put all WLCs in the same mobility group.. Two changes address roaming delay in this scenario: (C) Placing all WLCs in the same mobility group enables inter-controller roaming by allowing WLCs to share client state (PMK caching, 802.11r keys, IP binding) over the mobility tunnel. Without a shared mobility group, each cont
Question
Options
- ASet master controller mode on the least loaded WLC.
- BSet the AP failover priority identically on contiguous access points.
- CPut all WLCs in the same mobility group.
- DPlace all WLCs in the same RF group.
- EDefine a primary controller on contiguous access points.
Explanation
Two changes address roaming delay in this scenario: (C) Placing all WLCs in the same mobility group enables inter-controller roaming by allowing WLCs to share client state (PMK caching, 802.11r keys, IP binding) over the mobility tunnel. Without a shared mobility group, each controller roam is treated as a new association, causing full re-authentication delays. (E) Defining a primary controller on contiguous access points ensures APs in the same physical coverage area join the same WLC, maximizing intra-controller roams-which are near-instantaneous because no inter-WLC handoff is needed. The distractors are wrong because: (A) Master controller mode controls where new APs join, not roaming behavior; (B) identical AP failover priority is a high-availability setting, not a roaming optimization; (D) RF groups coordinate RRM (radio resource management) across WLCs but do not affect client mobility or roaming speed.
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