单项选择题
What is the default protocol preference for OSPF internal routes?（）
A.10 B.15 C.150 D.160
单项选择题 Given the routing entries shown in the exhibit, which next-hop IP address will be used for the destination IP address 192.168.1.142? （）
多项选择题 Which three protocols use UDP as a transport protocol by default?（）
多项选择题 Which two statements are true about the forwarding table?（）
