多项选择题
While troubleshooting some connectivity issues， you issue the "show ip ospf database" in order toexamine the link state database. Which three of the statements below are true regarding theOSPF link state database？（）
A.Each router has an identical link state database
B.External routes are imported into a separate link state database
C.Synchronization of link state databases is maintained via flooding of LSAs
D.Information in the link state database is used to build a routing table by calculating a shortest-path tree
E.By default， link state databases are refreshed every 10 minutes in the absence of topologychanges
相关考题
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单项选择题
DR （Designated Router） is for environments where many routers on the same network such asEthernet. In the following presented network， all routers are reloaded simultaneously， and DR isselected as expected. What is the CK-RTC status？（）
A.2WAY/BDR
B.FULL/BDR
C.2WAY/DROTHER
D.2WAY/DR
E.FULL/DROTHER
F.FULL/DR
G.None of the other alternatives apply -
多项选择题
Which three of the following network features are methods used to achieve high availability（）
A.Spanning Tree Protocol（STP）
B.Delay reduction
C.Hot Standby Routing Protocol（HSRP）
D.Dynamic routing protocols
E.Quality of Service（QoS）
F.Jitter management -
单项选择题
Refer to the exhibit. On the basis of the information presented， which statement is true？（）
A.OSPF router 5.0.0.2 is an ABR
B.Network 6.0.0.0/8 was learned from an OSPF neighbor within the area
C.The default route is learned from an OSPF neighbor
D.A default route is configured on the local router
