多项选择题
A. set protocols setospf area 0 set interface so-0/0/0.100
B. set protocols ospf area 0 interface so-0/0/0.100
C. edit protocols ospf interface so-0/0/0.100
D. edit protocols ospf area 0 set interface so-0/0/0.100
单项选择题 You are configuring a new BGP neighbor and want to view the configuration of interface ge- 0/0/0.42.Which command do you use to achieve this result?（）
单项选择题 You want to log in to the router and make a configuration change. After logging in as the root user, what is the next command you must enter?（）
单项选择题 Which command do you use to identify the meaning of a syslog message?（）