What is the purpose of Dual Ring Interconnect with D C for SDH rings?()

A . Protects signals when a ring switch fails B . Protects signals when multiple span switches fail C . Protects pre-emptible traffic from being dropped when a ring switch occurs D . Protects signals against any combination of link failure in each ring

时间:2022-10-15 20:36:56 所属题库:CCIE SP题库

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