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單項(xiàng)選擇題

Click the Exhibit button. As shown in the exhibit, a customer has several interconnected core rings. They want to create several irtual rings?utilizing their STM-64 backbone (nodes 1, 2, 3, and 4).
 What do you recommend? ()

A. SNCP rings
B. MS-SPRing rings
C. 1:N protection on all core circuits
D. dual-ring interconnect with MS-SPRing rings

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