试题详情
- 单项选择题 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
- D
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