单项选择题
A.origin,AS-path,next-hop B.AS-path,origin,MED C.AS-path,origin,weight D.AS-path,weight,MED
R1收到组播信息而R2收不到，why？
问答题
YouuseOSPFasyournetworkroutingprotocol.Youusethecommand...
单项选择题You use OSPF as your network routing protocol. You use the command show ip route and you see several routes described as O， O IA， O E1， and O E2. What routes are in your area？（）
A.O IA B.O E1 C.O E2 D.O
YourCisconetworkcurrentlyrunsOSPFandyouhaveaneedtopolic...
单项选择题Your Cisco network currently runs OSPF and you have a need to policy-route some specific traffic， regardless of what the routing table shows. Which one of these options would enable you to policy-route the traffic？（）
A.source IP address and the protocol （such as SSL， HTTPS， SSH） B.the packet Time to Live and the source IP address C.type of service header and DSCP value D.destination IP address
