Select the three best answers which best describe Private Network-to Network Interface （PNNI） in an ATM network.（）
A. It is the Routing protocol used between ATM switches
B. PNNI uses the same Dijsktra algorithm for SPF calculation
C. PNNI and OSPF use the same Database to make cohesive decision for packet forwarding
D. PNNI measures line capacities and delays in addition to simple cost metric
微信支付 
支付宝支付