True
False
第1题：
A. describes a change to the OSPF hello timer
B. carries one or more link-state advertisements
C. establishes and maintains neighbor relationships
D. describes the contents of the entire link-state database
第2题：
A.True
B.False
第3题：
A. Restrain the formation of adjacencies.
B. Control the flooding scope of link-state PDUs.
C. Partition the L2 backbone into multiple domains.
D. Aggregate L1 domains into a contiguous backbone.
第4题：
在OSPF中，Link State ID是LSA所描述的那部分链路的标识，下列对于不同类型LSA的Link State ID描述正确的是（）。
第5题：
A.Hello
B.Database description
C.Link state request
D.Link state DD
E.Link state advertisement
第6题：
While troubleshooting some connectivity issues，you issue the “show ip ospf database”in order to ex amine the link state database. Which three of the statements below are true regarding the OSPF link state database（）
A.Each router has an identical link state database.
B.External routes are imported into a separate link state database.
C.Syn chronization of link state databases is maintained via floodingo f 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 refreshede very 10 minutes in the absence of topology changes.
第7题：
A.ATT（Attached）bit
B.IS-Typebits
C.P（Partition）bit
D.Downbit
E.PN（Pseudonode）biy
F.ABR（AreaBorderRorter）bit
第8题：
A. show isis adjacency
B. show clns neighbors
C. show isis database
D. show clns database
第9题：
What bit should be set in the link state PDUs in an IS-IS level-1-2 router to indicate that they are a potentialexit point out of the area ？（）
第10题：
ATT （Attached ）bit needs to be set in the link state PDUs in an IS-IS level-1-2 router to indicate that theyare a potential exit point out of the area.（）