单项选择题
Which RIP message type is used to ask neighbors for updates?（）
A.A B.B C.C D.D
What are three characteristics of RIPv1?（） A.AB.BC.CD.D...
多项选择题
What are three characteristics of RIPv1?（）
A.A B.B C.C D.D E.E
What are three characteristics of RIPv2? （） A.AB.BC.CD....
What are three characteristics of RIPv2? （）
What are three characteristics of RIP?（） A.AB.BC.CD.DE...
What are three characteristics of RIP?（）
