多项选择题
A. AFI
B. MAC
C. area
D. N-Selector
E. IP address
单项选择题 In JUNOS software, what is the only BGP attribute where a higher value is preferred?（）
单项选择题 What is the default hello interval for RSVP in the JUNOS software?（）
单项选择题 You have a Level 1-only router (Router A) in IS-IS area 49.0001. How does Router A learn how to get to IP prefixes in other areas?（）