300-360 Question #207: Real Exam Question with Answer & Explanation

The correct answer is B: Configure mobility groups between WLCs. Two settings are critical for optimized inter-controller voice roaming. Configuring mobility groups between WLCs (B) enables the controllers to share client state, allowing a phone to roam from one WLC to another without dropping the call-this is inter-controller Layer 2/3 roamin

Question

The wireless team must configure a new voice SSID for optimized roaming across multiple WLCs with Cisco 7925 phones. Which two WLC settings accomplish this goal? (Choose two.)

Options

AConfigure AVC profiles on the SSID
BConfigure mobility groups between WLCs
CUse AVC to tag traffic voice traffic as best effort
DUse Cisco Centralized Key Management for authentication
EConfigure AP groups between WLCs

Explanation

Two settings are critical for optimized inter-controller voice roaming. Configuring mobility groups between WLCs (B) enables the controllers to share client state, allowing a phone to roam from one WLC to another without dropping the call-this is inter-controller Layer 2/3 roaming. Cisco Centralized Key Management (CCKM) (D) is a Cisco fast-roaming protocol that allows the phone to re-authenticate almost instantly during a handoff by caching key material at the WLC, which is essential for voice because standard 802.1X re-authentication is too slow. AVC profiles (A) are for application classification, not roaming. Tagging voice as best effort (C) would actively degrade call quality. AP groups (E) are used to segment AP-to-SSID mappings within a single WLC, not to optimize inter-controller roaming.

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