单项选择题
A. Type 9, AS scope
B. Type 10, AS scope
C. Type 10, Area scope
D. Type 9, Area scope
单项选择题 Within a BGP confederation how are routing loops avoided?（）
单项选择题 Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）
单项选择题 If the policies shown below evaluate as described, which action will occur for the listed policy expression?（） Policy A=True Policy B=True Policy C=True Policy D=False Policy Expression: !(A&&B)||C