单项选择题
A. PPMN with BLSR rings
B. PPMN with UPSR rings
C. 1:N protection on all core circuits
D. multi-ring interconnect with BLSR rings
单项选择题 With R4.0, how many total DCC tunnel connections can each ONS 15454 support using the TCC+ card?（）
多项选择题 Click the Exhibit button. Within an ONS 15454, you are provisioning a circuit on an unprotected UPSR ring. In the exhibit, which two must you configure?（） (Choose two.)
单项选择题 You are installing a Cisco ONS 15454 in a service provider site. A DS3 cable is to be connected to a digital cross-connect system. What is the maximum distance allowed between the two?（）
