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单项选择题Which of these is a correct description of SSO?()

A、 It will only become active after a software failure.

B、 It will only become active after a hardware failure.

C、 It requires that Cisco NSF be enabled in order to work successfully.

D、 It synchronizes the MAC·, FIB·, and adjacency tables between Active and Standby RouteProcessors.

  • D
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