单项选择题 Refer to the exhibit. Look at the command output. Assume that there is no other path，and the configuration is correct. What would be the consequences of this situation？（）

单项选择题 InordertoconfiguretworoutersasanycastRPs，whichoftheserequirements，ataminimum，mustbesatisfied？（）

问答题 whichvtpmodewillnottransportvlaninvtpdomain？