单项选择题
What is the address range associated with the link-local scope?（）
A.224.0.0.0/24 B.239.128.0.0/10 C.239.192.0.0/14 D.224.0.1.0-238.255.255.255
单项选择题 What defines a BGP confederation?（）
多项选择题 Which two conditions, when met, allow an IS-IS Level 2 router to be considered attached?（）
多项选择题 Which two are characteristics of both Kompella and Martini-based VPNs? （）
