试题详情
- 单项选择题 Which command will need to be added to External_A to ensure that it will take over if serial 0/0 on External_B fails?()
A、 standby 1 priority 130
B、 standby 1 preempt
C、 standby 1 track fastethernet 0/0
D、 standby 1 track 10.10.10.1
- B
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