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单项选择题To which switch or switches should you provide redundant links in order to achieve high availability with reliable fast convergence in the enterprise campus？（）

A、 to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 2 link

B、 to a core switch running Cisco NSF and SSO from redundant distribution switches connected with a Layer 3 link

C、 to two core switches from redundant distribution switches connected with Layer 2 link

D、 to two core switches from redundant distribution switches connected with Layer 3 link

E、 to two core switches running Cisco NSF and SSO from two redundant distribution switches running Cisco NSF and SSO

  • D

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