单项选择题
What is the function of the Type 4 LSA?（）
A. Advertise cost to the ABR. B. Summarize external routes. C. Advertise cost to the ASBR. D. Report a broadcast segment's DR
单项选择题 TLVs can be carried in what type of IS-IS PDU?（）
单项选择题 By default, which IS-IS metric types does JUNOS software support?（）
单项选择题 What is the procedure for announcing routes leared from RIP to ISIS neighbors?（）
