问题:
According to the information presented in the following exhibit, can you tell me the reason that thetrust state of interface FastEthernet 0/3 displays "not trusted"?()
A . The command mis qos needs to be turned on in global configuration mode
B . DSCP map needs to be configured for VOIP
C . ToS has not been configured
D . There is not a Cisco Phone attached to the interface
According to the information presented in the following exhibit, can you tell me the reason that thetrust state of interface FastEthernet 0/3 displays "not trusted"?()
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