SIP-based Call Admission Control must be configuredd in the Cisco WLC GUI.

Answer B,C is correct: B. Set the QoS level to platinum for voice traffic.; C. Enable Media Session Snooping on re WLAN.. For SIP-based Call Admission Control on a Cisco WLC, voice traffic should use the Platinum QoS profile and Media Session Snooping must be enabled so the controller can inspect SIP signaling and track media sessions. Traffic shaping on a LAN interface and separate QoS roles for data and voice are not the next required SIP CAC steps. Cisco CCNA 200-301 v1.1 IP Services and Network Access topics include QoS behavior for wireless voice because voice requires low latency, low jitter, and proper prioritization. The corrected answer pair is setting the QoS level to Platinum and enabling Media Session Snooping on the WLAN. Those settings align the WLAN with voice treatment and allow the controller to make call-admission decisions based on SIP session visibility.