Click the Exhibit button. A customer has several interconnected core rings (see exhibit). They want to create several irtual rings?utilizing their OC-192 backbone (nodes 1,2,3,4). What should you recommend?()<br /> <img src="https://img.ppkao.com/2018-08/yuanhao/2018080113454999337.jpg" /><p> Click the Exhibit button. A customer has several interconnected core rings (see exhibit). They want to create several irtual rings?utilizing their OC-192 backbone (nodes 1,2,3,4). What should you recommend?()<br /> <img src="https://img.ppkao.com/2018-08/yuanhao/2018080113454999337.jpg" /></p>
A、A. PPMN with BLSR rings
B、B. PPMN with UPSR rings
C、C. 1:N protection on all core circuits
D、D. multi-ring interconnect with BLSR rings