单项选择题
A.Apply an export policy in RIP
B.Apply an import policy in RIP
C.Apply an export policy in OSPF
D.Apply an import policy in OSPF
单项选择题 WhichLSAistheType10？（）
单项选择题 AnOSPFnon-backboneareaallowsexternalroutestobefloodedwithinthearea.Theseexternalroutesarepropagatedintootherareas.However，externalroutesfromotherareasarenotallowedtoenterthisarea.WhichtypeofSPFareadoesthisdescribe？（）
多项选择题 WhichtwomechanismscontrolroutedistributionbetweenPEroutersina2547bisVPN？（）