单项选择题
Why does IS-IS use the SPF algorithm?（）
A. to determine the pseudonode ID B. to determine the next hop to a given destination C. to determine the complete path to a given destination D. to determine the number of routers present in a given area
单项选择题 Which BGP attribute is considered first as a tie-breaker in JUNOS software?（）
单项选择题 Given the regular expression: 64900 . (65400-65410) Which AS Path matches the given regularexpression?（）
多项选择题 Which two are valid fields in an IPv6 header?（）
