单项选择题
A.stub B.transit C.border D.not-so-stubby
An OSPF non-backbone area allows external routes to be ...
An OSPF non-backbone area allows external routes to be flooded within the area. These external routes are propagated into the backbone. However, external routes from other areas are not allowed to enter this area. Which type of OSPF area does this describe?（）
A.A B.B C.C D.D
What is the purpose of the OSPF hello packet?（） A.AB.BC...
What is the purpose of the OSPF hello packet?（）
What information do OSPF hello packets contain?（） A.AB....
多项选择题
What information do OSPF hello packets contain?（）
A.A B.B C.C D.D E.E
