You are troubleshooting an OSPF problem where external routes are not showing up in the OSPF database. Which two options a re valid checks that should be performed first to verify proper OSPF operation?（）A、Are the ASBRs trying to redistribute the external

题目

You are troubleshooting an OSPF problem where external routes are not showing up in the OSPF database. Which two options a re valid checks that should be performed first to verify proper OSPF operation?（）

  • A、Are the ASBRs trying to redistribute the external routes into a totally stubby area?
  • B、Are the ABRs configured with stubby areas?
  • C、Is the subnets keyword being used with the redistribution command?
  • D、Is backbone area (area 0) contiguous?
  • E、Is the CPU utilization of the routers high?
相似考题

1.Your network contains a server named Server1 that runs Windows Server 2008 R2.You discover that the server unexpectedly shut down several times during the past week.You need to identify what caused the shutdowns and which software was recently installed.What should you click from Action Center？（）A. Maintenance, and then View reliability historyB. Troubleshooting, and then ProgramsC. Troubleshooting, and then System and SecurityD. Troubleshooting, and then View history

2.You have received a default route through BGP from your ISP and you want to redistribute it into OSPF.Which mehtod will accomplish this?()A. Apply an export policy to OSPF that exports the default routeB. Apply an import policy to OSPF that imports the default routeC. Apply the default-network command to OSPFD. Apply the redistribute-igp command to BGP

3.You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds.What could be the cause of this problem?（）A. OSPF authentication errors between some of the routersB. Two routers have the same OSPF router IDC. Issues with mistuned OSPF timersD. OSPF LSA pacing issues between some of the routersE. OSPF neighbor adjacency problems between some of the routers

4.Which two items should you know when configuring OSPF to dynamically learn routes? ()(Choose two.)A. OSPF area IDB. OSPF neighbor addressC. OSPF loopback addressD. OSPF authentication type

更多“You are troubleshooting an OSPF ”相关问题

  • 第1题：

    Refer to the exhibit. You have completed an OSPF implementation, and you are verifying OSPF operation. You notice that router A and router B are stuck in the two - way state. From the show ip ospf interface command output, what is the cause of this issue?（）

    A. All OSPF implementations must have at le ast one interface in area 0.

    B. You are attempting to run in the broadcast mode over an NBMA interface.

    C. Both routers are configured to function as a BDR; therefore, there is no DR router.

    D. Someone has changed the OSPF router ID; therefore you must clear the OSPF process.

    E. The OSPF priority is set to 0 on both routers; therefore neither can become the DR.


    参考答案：E

  • 第2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.


    参考答案：A, C, D

  • 第3题：

    At which stage of the Cisco Lifecycle Services approach would you recommend supporting and troubleshooting the system？  （）

    • A、 Preparation
    • B、 Planning
    • C、 Design
    • D、 Implementation
    • E、 Operation
    • F、 Optimization

    正确答案:E

  • 第4题：

    Which two items should you know when configuring OSPF to dynamically learn routes? （）(Choose two.)

    • A、OSPF area ID
    • B、OSPF neighbor address
    • C、OSPF loopback address
    • D、OSPF authentication type

    正确答案:A,D

  • 第5题：

    You have implemented mutua l route redistribution between OSPF and EIGRP on a border router. When checking the routing table on one of the EIGRP routers within the EIGRP routing domain, you are seeing some, but not all of the expected routes. What should you verify to troubleshoot this problem?（）

    • A、The border router is using a proper seed metric for OSPF
    • B、The border router is using a proper seed metric for EIGRP
    • C、The administrative distance is set for OSPF and EIGRP
    • D、The missing OSPF routes are present in the routing  table of the border router
    • E、The subnet keyword on the border router in the redistribute OSPF command

    正确答案:D

  • 第6题：

    As an experienced Network Engineer, you are responsible for network connectivity and system configuration. Which of the following protocols will be supported by Cisco Nonstop Forwarding (NSF)?（）

    • A、ISSU，OSPF，IS-IS
    • B、IETF，OSPF，ISSU
    • C、IS-IS，EIGRP，SSO，BGP
    • D、EIGRP，BGP，OSPF，IS-IS

    正确答案:D

  • 第7题：

    Your network contains a server named Server1 that runs Windows Server 2008 R2.You discover that the server unexpectedly shut down several times during the past week.You need to identify what caused the shutdowns and which software was recently installed. What should you click from Action Center？（）

    • A、Maintenance, and then View reliability history
    • B、Troubleshooting, and then Programs
    • C、Troubleshooting, and then System and Security
    • D、Troubleshooting, and then View history

    正确答案:A

  • 第8题：

    单选题
    At which stage of the Cisco Lifecycle Services approach would you recommend supporting and troubleshooting the system？  （）
    A

     Preparation

    B

     Planning

    C

     Design

    D

     Implementation

    E

     Operation

    F

     Optimization


    正确答案： E
    解析： 暂无解析

  • 第9题：

    单选题
    When attepting to view the OSPF routes in the routing table, you issue the command show route table inet but no OSPF routes are displayed. What is the problem?（）
    A

    The OSPF routes are located in the inet 4 routing table

    B

    THe OSPF routes are located in the inet 0 routing table

    C

    The OSPF routes are located in the inet 2 routing table

    D

    The OSPF routes are located in the inet 4.3 routing table


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    You have implemented mutua l route redistribution between OSPF and EIGRP on a border router. When checking the routing table on one of the EIGRP routers within the EIGRP routing domain, you are seeing some, but not all of the expected routes. What should you verify to troubleshoot this problem?（）
    A

    The border router is using a proper seed metric for OSPF

    B

    The border router is using a proper seed metric for EIGRP

    C

    The administrative distance is set for OSPF and EIGRP

    D

    The missing OSPF routes are present in the routing  table of the border router

    E

    The subnet keyword on the border router in the redistribute OSPF command


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    You have received a default route through BGP from your ISP and you want to redistribute it into OSPF.Which mehtod will accomplish this?（）
    A

    Apply an export policy to OSPF that exports the default route

    B

    Apply an import policy to OSPF that imports the default route

    C

    Apply the default-network command to OSPF

    D

    Apply the redistribute-igp command to BGP


    正确答案： B
    解析： 暂无解析

  • 第12题：

    多选题
    You are troubleshooting an OSPF problem where external routes are not showing up in the OSPF database. Which two options a re valid checks that should be performed first to verify proper OSPF operation?（）
    A

    Are the ASBRs trying to redistribute the external routes into a totally stubby area?

    B

    Are the ABRs configured with stubby areas?

    C

    Is the subnets keyword being used with the redistribution command?

    D

    Is backbone area (area 0) contiguous?

    E

    Is the CPU utilization of the routers high?


    正确答案： A,B
    解析： 暂无解析

  • 第13题：

    On your OSPF network, routers TK1 and TK2 belong to the same Ethernet network. However, they are unable to establish an adjacency over this link. While troubleshooting this problem, you issue the "show ip ospf interface Ethernet 0"command on each router. The output from these commands is displayed below:What is the underlying cause of the routers failing to become adjacent?（）

    A. The OSPF area is misconfigured.

    B. The priority on TK2 should be set lower.

    C. The cost on TK2 should be set lower.

    D. The hello and dead timers are misconfigured.

    E. You need to add a backup designated router to the network.

    F. The OSPF process ID numbers do not match.


    参考答案：D

  • 第14题：

    You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）

    • A、OSPF authentication errors between some of the routers
    • B、Two routers have the same OSPF router ID
    • C、Issues with mistuned OSPF timers
    • D、OSPF LSA pacing issues between some of the routers
    • E、OSPF neighbor adjacency problems between some of the routers

    正确答案:B

  • 第15题：

    You have implemented mutual route redistribution between OSPF and EIGRP on a border router. When checking the routing table on one o f the OSPF routers within the OSPF routing domain, you are seeing some, but not all of the expected routes. Which two things should you verify to troubleshoot this problem?（）

    • A、The border router is using a proper seed metric for OSPF
    • B、The border ro uter is using a proper seed metric for EIGRP
    • C、The administrative distance is set for OSPF and EIGRP
    • D、The missing EIGRP routes are present in the routing table of the border router
    • E、The subnet keyword on the border router in the redistribute EIG RP command

    正确答案:D,E

  • 第16题：

    You need to uninstall a Windows update from a computer that runs Windows 7. Which Control Panel itemshould you use?（）

    • A、Administrative Tools
    • B、Programs and Features
    • C、Sync Center
    • D、Troubleshooting

    正确答案:B

  • 第17题：

    when you use LSA type 4 in OSPF environment？


    正确答案: Type 4 LSAs （ASBR Summary LSAs） are originated by Area Border Routers to describe Autonomous System Boundary Routers outside the area.
    When external route is inject into the ospf domain， ASBR Summary LSA is used byABR to advertise ASBRs external to an area.

  • 第18题：

    When attepting to view the OSPF routes in the routing table, you issue the command show route table inet but no OSPF routes are displayed. What is the problem?（）

    • A、The OSPF routes are located in the inet 4 routing table
    • B、THe OSPF routes are located in the inet 0 routing table
    • C、The OSPF routes are located in the inet 2 routing table
    • D、The OSPF routes are located in the inet 4.3 routing table

    正确答案:B

  • 第19题：

    问答题
    when you use LSA type 4 in OSPF environment？

    正确答案： Type 4 LSAs （ASBR Summary LSAs） are originated by Area Border Routers to describe Autonomous System Boundary Routers outside the area.
    When external route is inject into the ospf domain， ASBR Summary LSA is used byABR to advertise ASBRs external to an area.
    解析： 暂无解析

  • 第20题：

    单选题
    You have completed an OSPF implementation, and you are verifying OSPF operation. During this verification, you notice that the OSPF route of 172.16.10.0 is repeatedly appearing and disappearing from the routing table. Further investigation finds that the OSPF CPU utilization is very high and the routers are constantly performing SPF calculations. You determine that 172.16.20.2 is the source of the 172.16.10.0 route. Using the show ip ospf database router 172.16.20.1 command, you notice that when this show command is performed repeatedly, the contents of the LSA change every few seconds. What could be the cause of this problem?（）
    A

    OSPF authentication errors between some of the routers

    B

    Two routers have the same OSPF router ID

    C

    Issues with mistuned OSPF timers

    D

    OSPF LSA pacing issues between some of the routers

    E

    OSPF neighbor adjacency problems between some of the routers


    正确答案： D
    解析： 暂无解析

  • 第21题：

    多选题
    When you are troubleshooting duplex mismatches， which two errors are typically seen on the full- duplexend？（）
    A

    runts

    B

    FCS errors

    C

    interface resets

    D

    late collisions


    正确答案： C,A
    解析： 暂无解析

  • 第22题：

    多选题
    Which two commands would you use to view OSPF routes?（）
    A

    show ip route ospf

    B

    show ospf routes

    C

    show route protocol ospf

    D

    show route


    正确答案： B,D
    解析： 暂无解析

  • 第23题：

    多选题
    When you are troubleshooting duplex mismatches， which two errors are typically seen on the fullduplex end？（）
    A

    runts

    B

    FCS errors

    C

    interface resets

    D

    late collisions


    正确答案： B,C
    解析： 暂无解析

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