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Which description regarding OSPF

题目

Which description regarding OSPF Network LSAs is correct?（）

  • A、They are originated by Area Border Router and are sent into a single area to advertise an Autonomous System Border Router.
  • B、They are originat ed by Area Border Routers and are sent into a single area to advertise destinations outside that area.
  • C、They are originated by the DR on every multi - access network. They include all attached routers including the DR itself.
  • D、They are originated by  every router in the OPSF network. They include all routers on the link, interfaces, the cost of the link, and any known neighbor on the link.
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相似问题和答案

第1题：

Route redistribution (RR) has become an integral part of IP network design as the res ult of a growing need for disseminating certain routes across routing protocol boundaries. By default, which description is true when redistributing routes from other routing protocols into OSPF?（）

A. Summarized routes are unacceptable

B. They will appe ar in the OSPF routing table as type E2 routes

C. Only routes with lower administrative distances will be imported

D. All imported routes are to be automatically summarized if possible


参考答案：B

第2题：

When verifying OSPF virtual link problems, which is an important item to check on the two transit OSPF routers?（）

  • A、OSPF process ID
  • B、OSPF router ID
  • C、OSPF network type
  • D、OSPF memory usage
  • E、OSPF CPU utilization
  • F、OSPF stub area configurations

正确答案:B

第3题：

Which of the following can either directly or indirec tly identify all the interfaces for which both 1) OSPF has been enabled and 2) OSPF is not passive?()

A. show ip ospf database

B. show ip ospf interface brief

C. show ip protocols

D. show ip route ospf

E. show ip ospf neighbors


参考答案：B, C

第4题：

Which two statements are correct regarding default protocol preference values?（）

  • A、OSPF internal routes have a lower preference than static routes.
  • B、Both direct and local routes have the same preference value.
  • C、OSPF's preference value is lower than BGP.
  • D、OSPF has a single preference value for both internal and external routes.

正确答案:B,C

第5题：

Which of the following are true statements regarding the characteristics of OSPF areas? Select all that apply.（）

  • A、All OSPF networks require the use of multiple areas
  • B、Multiple OSPF areas must connect to area 0
  • C、Single area OSPF networks must be configured in area 1
  • D、Areas can be assigned any number from 0 to 63535
  • E、Area 0 is called the backbone area
  • F、Each OSPF area need to be configured with a loopback interface

正确答案:B,E

第6题：

Which is the branch of linguistics which studies the characteristics of speech sounds and provides methods for their description, classification and transcription?

A.Phonetics
B.Phonology
C.Semantics
D.Pragmatics

答案：A
解析：
本题考查语音学的概念。

A选项，Phonetics语音学：从自然属性的角度研究人类语音。是研究人类语音特点，并提供语音描写、分类和标音方法的科学。综上，A选项正确。

B选项，Phonology音系学：研究语言中出现的区别语音及语音结构、分布和排序的规则以及音节的形状是如何形成语音系统来表达意义的语言学分支。故排除。

C选项，Semantics语义学：语义学研究意义的语言学分支。故排除。

D选项，Pragmatics语用学：研究语言在语境中的意义的语言学分支。故排除。

故正确答案为A项。

第7题：

Which of the following data structures exist on a router for the OSPF routing protocol？（）

  • A、OSPF topology table
  • B、OSPF interface table
  • C、OSPF routing information base
  • D、OSPF link-state database
  • E、OSPF adjacency table
  • F、OSPF neighbor table

正确答案:B,C,D,F

第8题：

What is the purpose of the OSPF router ID in a OR／BOR election?()

A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network

B. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router

C. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network

D. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers


参考答案：C

第9题：

Which two statements are correct regarding default protocol preference values?（）

  • A、RIP is preferred over OSPF external routes.
  • B、Direct, local, and static routes have the same preference value.
  • C、OSPF's preference value is lower than BGP.
  • D、OSPF has a single preference value for both internal and external routes.

正确答案:A,C

第10题：

What is the purpose of the OSPF router ID in a OR/BOR election?（）

  • A、It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network
  • B、It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router
  • C、It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network
  • D、It is used to determine which interfaces will send Hello packets to neighboring OSPF routers

正确答案:C

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