CISCO 300-430 Exam Question 28

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What is the Cisco recommended configuration for a Cisco switch port connected to an AP in local mode for optimal voice over WLAN performance with an 8821 wireless phone?
A. switchport encapsulation dot1q switchport mode trunk mls qos trust device cisco-phone
B. switchport mode access mls qos trust device cisco-phone
C. switchport mode access mls qos trust cos
D. switchport mode access mls qos trust dscp
Correct Answer: C