单项选择题
What is periodically sent by a DIS on a LAN to ensure that all adjacent neighbors' IS - IS link - state databases are synchronized?（）
A. complete SNP (CSNP) B. partial SNP (PSNP) C. database query D. database description packet (DDP) E. link - state summary F. hello
单项选择题 What are the basic configuration steps to enable IS - IS?（）
单项选择题 In reference to the P1R3 show isis route output, which statement is true? （）
单项选择题 What will happen after redistributing other routing protocol routes into OSPF? （）
