多项选择题 Which two statements are true when configuring a domain-id? （）

单项选择题 A BGP router should use three export policies named add-communities, no-rfc1918-routes, andrejected-unwanted. Which export statement places the add-communities policy immediately before the default BGP policy?（）

多项选择题 What are three TLVs that support IS-IS extensions for traffic engineering?（）