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Which description regarding OSPF Network LSAs is correct?（）

题目
单选题
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.

参考答案和解析
正确答案： C
解析： 暂无解析
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相似问题和答案

第1题：

Refer to the exhibit. Two routers are connected by Frame Relay and are running OSPF bet ween them. Each router has been configured with the appropriate network statements under router ospf 1, but the routers are not forming an adjacency. Which of the following three commands could be configured on each router to correct this problem?（）

A. RouterC(config - if)#ip ospf network broadcast RouterD(config - if)#ip ospf network broadcast

B. RouterC(config - if)#ip ospf network point - to - point RouterD(config - if)#ip ospf network point - to - point

C. RouterC(config - router)#neighbor 10.100. 100.4 RouterD(config - router)#neighbor 10.100.100.3

D. RouterC(config - router)#neighbor 10.255.255.254 RouterD(config - router)#neighbor 10.255.255.253


参考答案：A, B, D

第2题：

You are developing a verification plan for an upcoming OSPF implementation. Part of this plan is to verify the status of type 3 LSAs within the network. Which routers should you verify first to ensure that the configuration s are correct for generating type 3 LSAs?（）

A. Internal routers within the backbone area (area 0)

B. Internal routers within the NSSAs

C. Internal routers within the stubby areas

D. ASBRs

E. ABRs

F. DRs and BDRs


参考答案：E

第3题：

Which router translates the Type 7 LSAs into Type 5 LSAs, according to RFC 1587 (OSPF NSSAOption) in an OSPF NSSA with more than one ABR?()

A. The router receiving the route translates the Type 7 LSA into a Type 5 LSA.

B. The ABR with the lowest router ID translates all Type 7 LSAs into Type 5 LSAs.

C. The ABR with the highest router ID translates all Type 7 LSAs into Type 5 LSAs.

D. All ABRs translate the Type 7 LSAs into Type 5 LSAs depending on which one has the lowest cost to the route.


参考答案：C

第4题：

When verifying the OSPF link state database, which type of LSAs should you expect to see within the different OS PF area types?（）

  • A、All OSPF routers in stubby areas can have type 3 LSAs in their database.
  • B、All OSPF routers in stubby areas can have type 7 LSAs in their database.
  • C、All OSPF routers in totally stubby areas can have type 3 LSAs in  their database.
  • D、All OSPF routers in totally stubby areas can have type 7 LSAs in their database.
  • E、All OSPF routers in NSSA areas can have type 3 LSAs in their database.
  • F、All OSPF routers in NSSA areas can have type 7 LSAs in their database.

正确答案:A,E,F

第5题：

Which statement is correct about an OSPF sham-link？（）

  • A、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
  • B、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
  • C、A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.
  • D、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
  • E、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.

正确答案:B

第6题：

Refer to the exhibit. OSPF is running throughout the network. You want to minimize the propagation of LSAs into and out of A rea 1. Which OSPF feature would best achieve this goal? ()

A. stub

B. totally stubby

C. NSSA

D. totally NSSA


参考答案：D

第7题：

Which show command will display only the Type 5 LSAs in the OSPF topology database?()

A. show ip ospf database external

B. show ip ospf database nssa - external

C. show ip route ospf

D. show ip ospf datab ase summary

E. show ip route


参考答案：A

第8题：

Which of the following OSPF messages contains entire complete LSAs used during the database exchange process?()

A. LSR

B. LSAck

C. LSU

D. DD

E. Hello


参考答案：C

第9题：

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.

正确答案:C

第10题：

What are two benefits of using a single OSPF area network design?（）

  • A、it reduces the number of required OSPF neighbor adjacencies
  • B、It reduces the types of LSAs that are generated
  • C、It is less CPU intensive for routers in the single area
  • D、It increases LSA response times.
  • E、It removes the need for virtual links

正确答案:B,E

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