Refer to the exhibit,a network administrator cannot establish a telnet session with the indicated router.What is the cause of th

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问题 Refer to the exhibit,a network administrator cannot establish a telnet session with the indicated router.What is the cause of this failure?

选项 A、        A level 5 password is not set
B、        The vty password is missing
C、        The console password is missing
D、        An ACL is blocking Telnet access

答案B

解析
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