单项选择题

Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?（）

A.transport type all
B.transport output all
C.transport preferred all
D.transport input all

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CCNA系列认证综合练习

Which commands is necessary to permit SSH or Telnet access to a cisco switch that is otherwise configured for these vty line protocols?（）