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单项选择题Which statement best describes Cisco supervisor engine redundancy using Stateful Switchover?()

A、Switchover ensures that Layer 2 through Layer 4 traffic is not interrupted

B、Redundancy requires BGP, OSPF, EIGRP, or IS-IS

C、Redundancy provides fast supervisor switchover for all Cisco Catalyst 6500 series switches

D、Switchover can be caused by clock synchronization failure between supervisors

  • D
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