CISCO 300-815 Exam Question 37

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Due to a shortage of physical interfaces on a device, the administrator requires that a loopback for RTP is used. Which command is required when using a loopback interface for RTP?
A. voice-class sip early-offer forced
B. voice-class sip bind control source-interface Loopback0
C. voice-class sip bind media source-interface Loopback0
D. voice-class sip resource priority mode passthrough
Correct Answer: C