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?（）

单项选择题 You want to suppress advertisement of all routes within the 200.200.0.0/16 range to your OSPFneighbors in other areas. Which configuration accomplishes this goal?（）

多项选择题 What are two characteristics of the RED algorithm as implemented in JUNOS software?（）