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Routers R1 and R2, currently EIGRP neighbors over their Fa0/0 interfaces (respectively),both use EIGRP authentication. Tuesday at 8 p.m. the neighborship fails. Which of the following wo uld not be useful when investigating whether authenticationhad anyt

题目

Routers R1 and R2, currently EIGRP neighbors over their Fa0/0 interfaces (respectively),both use EIGRP authentication. Tuesday at 8 p.m. the neighborship fails. Which of the following wo uld not be useful when investigating whether authenticationhad anything to do with the failure？（）

  • A、debug eigrp packet
  • B、show key chain
  • C、show ip eigrp neighbor failure
  • D、show clock
相似考题

1.Refer to the exhibit. Routers R1 and R2 have established a neighbor relationship and are exchanging routing information. The network design requires that R1 r eceive routing updates from R2, but not advertise any routes to R2. Which configuration command sequence will successfully accomplish this task? （）A. R1(config)# router eigrp 1 R1(config - router)# passive - interface serial 0B. R1(config)# access - list 2 0 deny any R1(config)# router eigrp 1 R1(config - router)# distribute - list 20 out serial 0C. R2(config)# access - list 20 permit any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 in serial 0D. R1(config)# access - list 20 permit any R 1(config)# router eigrp 1 R1(config - router)# distribute - list 20 in serial 0E. R2(config)# access - list 20 deny any R2(config)# router eigrp 1 R2(config - router)# distribute - list 20 out serial 0F. R2(config)# router eigrp 1 R2(config - router)# passive - interface serial 0

2.Given the network diagram, which routers currently make up the IS － IS backbone?()A. R3,R4,R6B. R2,R3,R6,R7C. R1 through R8D. R3,R4,R5,R6E. R2,R3,R4,R6,R7

3.Refer to the exhibit. All routers have Protocol Independent Multicast (PIM) enabled interfaces. On the basis of the configuration provided on routers R1 and R2, which router will take on the func tion of rendezvous point (RP) for the multicast network? （）A. both routers R1 and R2B. router R1C. router R2D. none of the routers since they are not configured with static RP

4.Refer to the exhibit. OSPF has been configured on all routers in the network. However, router R1 does not receive a default route to router R2 as in tended. Which configuration change would ensure that R1 would receive a default route from R2? （）A. Add the area 1 stub command on routers R1.B. Add the always keyword to the default - information originate configuration command on router R2.C. Remov e the default information originate configuration command from router R2 and place it on router R1.D. Add the ip route 5.0.0.0 255.255.255.0 0.0.0.0 command to router R2.

更多“Routers R1 and R2, currently EI”相关问题

  • 第1题：

    Refer to the exhibit. Autonomous systems 200 and 300 have EBGP sessions established with their directly connected routers in au tonomous system 100. IGP has been configured on all routers in autonomous system 100 and they successfully exchange routing updates. Traffic originated in autonomous system 200 cannot reach the destination autonomous system 300. What configuration shoul d be done on the routers in autonomous system 100 in order for the traffic coming from autonomous system 200 to be forwarded to autonomous system 300?（）

    A. IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned off.

    B. IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned on.

    C. IBGP session must be established between routers R1 R2 and R2 R3, and the synchronization must be turned on.

    D. IBGP session mu st be established between routers R1 and R3, and the synchronization must be turned off.

    E. IBGP speakers within autonomous 100 must be fully meshed, and the synchronization must be turned off.

    F. IBGP session must be established between routers R1 and R3, and the synchronization must be turned on.


    参考答案：E

  • 第2题：

    Refer to the exhibit. Routers R1 and R2 are running EIGRP and have converged. On the basis of the information that is presented, which statement is true? ()

    A. Both outgoing and incoming routing updates on R1 will be permitted because the d istribute - list 20 out Serial0/0 command cannot be used with association with the outgoing interface.

    B. All incoming routing updates from R2 will be suppressed, but the outgoing updates will continue to be sent.

    C. Both outgoing and incoming routing up dates on R1 will be stopped because of the passive - interface Serial0/0 configuration statement.

    D. All outgoing routing updates from router R1 to router R2 will be suppressed, but the inbound updates will continue to be received.


    参考答案：C

  • 第3题：

    计算题：两个电阻R1和R2并联连接，当R1和R2具有下列数值时，试求并联的等效电阻。①R1=R2=2Ω；②R1=2Ω，R2=0。


    正确答案: ①R=R1×R2/（R1+R2）=2×2/（2+2）=2（Ω）
    ②R=R1×R2/（R1+R2）=2×0/（2+0）=0（Ω）

  • 第4题：

    Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）

    • A、Traffic forwarded from R2 to or through R1 will continue to be forwarded based on the forwarding table state at the time of the reload.
    • B、R2 will continue to forward traffic to R1， but R1 will drop the traffic because its neighbor adjacency with R2 has failed.
    • C、R2 will continue forwarding traffic to and through R1， but R1 will drop this traffic because it is not capable of maintaining its forwarding state.
    • D、All the traffic R2 is forwarding to or through R1 will be dropped while OSPF rebuilds its neighbor adjacency and forwarding tables.

    正确答案:A

  • 第5题：

    Routers R1 and R2 are EIGRP neighbors using their Fa0/0 interfaces, respectively. An engineer adds the ip hello - interval eigrp 9 6 command to R1's Fa0/0 configuration. Which of the following is true regarding the results from this c hange？（）

    • A、The show ip eigrp neighbors command on R1 lists the revised Hello timer
    • B、The show ip eigrp interfaces command on R1 lists the revised Hello timer
    • C、The R1 - R2 neighborship fails due to Hello timer mismatcH
    • D、The show ip eigrp interfaces detail command on R1 lists the revised Hello timer

    正确答案:D

  • 第6题：

    R1 and R2 exchange HSRP between each other in the Company network.  In which three HSRP  states do routers send hello messages？（）

    • A、 Learn
    • B、 Speak
    • C、 Standby
    • D、 Listen
    • E、 Active
    • F、 Remove

    正确答案:B,C,E

  • 第7题：

    单选题
    Routers R1 and R2 are configured for HSRP as shown below：   Router R1：   interface ethernet 0   ip address 20.6.2.1 255.255.255.0   standby 35 ip 20.6.2.21   standby 35 priority 100   interface ethernet 1   ip address 20.6.1.1.2 255.255.255.0   standby 34 ip 20.6.1.21    Router R2：   interface ethernet 0   ip address 20.6.2.2 255.255.255.0   standby 35 ip 20.6.2.21   interface ethernet 1   ip address 20.6.1.1.1 255.255.255.0   standby 34 ip 20.6.1.21  standby 34 priority 100   You have configured the routers R1 & R2 with HSRP. While debugging router R2 you notice very   frequent HSRP group state transitions.  What is the most likely cause of this？ （）
    A

     physical layer issues

    B

     no spanning tree loops

    C

     use of non-default HSRP timers

    D

     failure to set the command standby 35 preempt


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）
    A

    Traffic forwarded from R2 to or through R1 will continue to be forwarded based on the forwarding table state at the time of the reload.

    B

    R2 will continue to forward traffic to R1， but R1 will drop the traffic because its neighbor adjacency with R2 has failed.

    C

    R2 will continue forwarding traffic to and through R1， but R1 will drop this traffic because it is not capable of maintaining its forwarding state.

    D

    All the traffic R2 is forwarding to or through R1 will be dropped while OSPF rebuilds its neighbor adjacency and forwarding tables.


    正确答案： A
    解析： 暂无解析

  • 第9题：

    多选题
    Routers R1 and R2 are EIGRP neighbors. R1 has been configured with the eigrp stub connected command. Which of the following is true as a result？（）
    A

    R1 can learn EIGRP routes from R2, but R2 cannot learn EIGRP routes from R1

    B

    R1 can send IP packets to R2, but R2 cannot send IP packets to R1

    C

    R2 no longer learns EIGRP routes from R1 for routes not connected to R1

    D

    R1 no longer replies to R2's Query messages

    E

    R2n o longer sends to R1 Query messages


    正确答案： A,B
    解析： 暂无解析

  • 第10题：

    单选题
    Routers R1 and R2 are configured for HSRP as shown below： Router R1： interface ethernet 0 ip address 20.6.2.1 255.255.255.0 standby 35 ip 20.6.2.21 standby 35 priority 100 interface ethernet 1 ip address 20.6.1.1.2 255.255.255.0 standby 34 ip 20.6.1.21 Router R2： interface ethernet 0 ip address 20.6.2.2 255.255.255.0 standby 35 ip 20.6.2.21 interface ethernet 1 ip address 20.6.1.1.1 255.255.255.0 standby 34 ip 20.6.1.21 standby 34 priority 100 You have configured the routers R1 & R2 with HSRP. While debugging router R2 you notice veryfrequent HSRP group state transitions. What is the most likely cause of this？（）
    A

    physical layer issues

    B

    no spanning tree loops

    C

    use of non-default HSRP timers

    D

    failure to set the command standby 35 preempt


    正确答案： D
    解析： 暂无解析

  • 第11题：

    多选题
    Routers R1 and R2, OSPF neighbors in area 0 over their Fa0/0 interfaces (respectively), currently both successfully use OSPF MD5 authentication. The OSPF configuration includes the area 0 authentication command under the router ospf 1 command. Which of the following commands must have been configur ed on R1's Fa0/0 interface?（）
    A

    ip ospf authentication null

    B

    ip ospf authentication message - digest

    C

    ip ospf authentication -key whatever- it - is

    D

    ip ospf message - digest - key 1 md5 whatever - it - is

    E

    ip ospf md5 1 key whatever - it - is


    正确答案： B,E
    解析： 暂无解析

  • 第12题：

    单选题
    Routers R1 and R2 are EIGRP neighbors using their Fa0/0 interfaces, respectively. An engineer adds the ip hello - interval eigrp 9 6 command to R1's Fa0/0 configuration. Which of the following is true regarding the results from this c hange？（）
    A

    The show ip eigrp neighbors command on R1 lists the revised Hello timer

    B

    The show ip eigrp interfaces command on R1 lists the revised Hello timer

    C

    The R1 - R2 neighborship fails due to Hello timer mismatcH

    D

    The show ip eigrp interfaces detail command on R1 lists the revised Hello timer


    正确答案： D
    解析： 暂无解析

  • 第13题：

    Routers R1 and R2, currently EIGRP neighbors over their Fa0/0 interfaces (respectively),both use EIGRP authentication. Tuesday at 8 p.m. the neighborship fails.Which of the following wo uld not be useful when investigating whether authenticationhad anything to do with the failure？（）

    A. debug eigrp packet

    B. show key chain

    C. show ip eigrp neighbor failure

    D. show clock


    参考答案：C

  • 第14题：

    两个电阻R1和R2做串联连接，当R1和R2具有以下数值时，试求串联的等效电阻： ①R1＝R2＝1Ω；②R1＝3Ω，R2＝6Ω。
    ①R＝R1＋R2＝1＋1＝2（Ω）
    ②R＝R1＋R2＝3＋6＝9（Ω）
    ①的串联的等效电阻是2Ω；②的串联等效电阻为9Ω。
    略

  • 第15题：

    Routers R1 and R2 are EIGRP neighbors. R1 has been configured with the eigrp stub connected command. Which of the following is true as a result？（）

    • A、R1 can learn EIGRP routes from R2, but R2 cannot learn EIGRP routes from R1
    • B、R1 can send IP packets to R2, but R2 cannot send IP packets to R1
    • C、R2 no longer learns EIGRP routes from R1 for routes not connected to R1
    • D、R1 no longer replies to R2's Query messages
    • E、R2n o longer sends to R1 Query messages

    正确答案:C,E

  • 第16题：

    Ten routers, R1 through R10, connect in a partial mesh over Frame Relay. For the mesh, R1 and R2 have PVCs connected to all other routers, but Routers R3 through R10 act as branch routers, with only two PVCs - one to R1 and one to R2. The routers u se IP subnet 10.1.1.0/24, with addresses 10.1.1.1, 10.1.1.2, and so on, through 10.1.1.10, respectively. The routers all use Inverse ARP to learn Frame Relay mapping information. All routers use a multipoint subinterface with network type point - tomultip oint nonbroadcast. A co - worker's implementation plan lists lots of configuration commands related to this design. The design states that all hosts should be able to ping all other hosts. Which commands are required for proper functioning of OSPF in this case?（）

    • A、frame - relay map commands on R3 - R10 referencing the other routers in this group
    • B、Nine OSPF neighbor commands on each router
    • C、Nine OSPF neighbor commands on R1 and R2, with only two such commands on R3 - R10
    • D、R1 and R2 with ip ospf prio rity 1 commands to ensure they become DR and BDR
    • E、R3 - R10 with ip ospf priority 0 commands to ensure they do not become DR or BDR

    正确答案:A,C

  • 第17题：

    Assume two routers on the same subnet， R1 and R2， both configured for HSRP. R1 has a priority of 120.Which of the following HSRP interface configurations will always result in the R2 becoming the primary？（）

    • A、standby 1 priority 110
    • B、standby 1 priority 120
    • C、standby 1 priority 130
    • D、standby 1 priority 110 preempt
    • E、standby 1 priority 120 preempt
    • F、standby 1 priority 130 preempt

    正确答案:C,F

  • 第18题：

    电阻R1，R2并联，已知R1＞＞R2，并联后的等值电阻近似等于R1，即R≈R1。


    正确答案:错误

  • 第19题：

    单选题
    以下不能完成将R2中数值的两倍写入R1中的ARM指令是（）
    A

    ADD R1，R2，R2

    B

    ORR R1，R2，R2

    C

    MOV R1，R2，LSL#1

    D

    MUL R1，R2，#2


    正确答案： B
    解析： 将R2寄存器中的数值的两倍写入R1，可以通过加法指令、移位指令（逻辑左移相当于乘操作）和乘法指令完成，故选项中仅B项无法完成，本题选B。

  • 第20题：

    多选题
    Ten routers, R1 through R10, connect in a partial mesh over Frame Relay. For the mesh, R1 and R2 have PVCs connected to all other routers, but Routers R3 through R10 act as branch routers, with only two PVCs - one to R1 and one to R2. The routers u se IP subnet 10.1.1.0/24, with addresses 10.1.1.1, 10.1.1.2, and so on, through 10.1.1.10, respectively. The routers all use Inverse ARP to learn Frame Relay mapping information. All routers use a multipoint subinterface with network type point - tomultip oint nonbroadcast. A co - worker's implementation plan lists lots of configuration commands related to this design. The design states that all hosts should be able to ping all other hosts. Which commands are required for proper functioning of OSPF in this case?（）
    A

    frame - relay map commands on R3 - R10 referencing the other routers in this group

    B

    Nine OSPF neighbor commands on each router

    C

    Nine OSPF neighbor commands on R1 and R2, with only two such commands on R3 - R10

    D

    R1 and R2 with ip ospf prio rity 1 commands to ensure they become DR and BDR

    E

    R3 - R10 with ip ospf priority 0 commands to ensure they do not become DR or BDR


    正确答案： A,E
    解析： 暂无解析

  • 第21题：

    单选题
    A company uses Routers R1 and R2 to connect to ISP1 and ISP2, respectively, with Routers I1 and I2 used at the ISPs. R1 peers with I1 and R2; R2 peers with I2 and R1. Assuming as many default s ettings as possible are used on all four routers, which of the following is true about the next - hop IP address for routes R1 learns over its iBGP connection to R2?（）
    A

    The next hop is I2's BGP RID

    B

    The next hop is I2's IP address used on the R2 - I2 neigh bor relationship

    C

    The next hop is R2's BGP RID

    D

    The next hop is R2's IP address used on the R1 - R2 neighbor relationship


    正确答案： B
    解析： 暂无解析

  • 第22题：

    多选题
    A company uses Routers R1 and R2 to connect to ISP1 and ISP2, respectively, with Routers I1 and I2 used at th e ISPs. R1 peers with I1 and R2; R2 peers with I2 and R1. R1 and R2 do not share a common subnet, relying on other routers internal to the Enterprise for IP connectivity between the two routers. Which of the following could be used to prevent potential routing loops in this design?（）
    A

    Using an iBGP mesh inside the Enterprise core

    B

    Configuring default routes in the Enterprise pointing to both R1 and R2

    C

    Redistributing BGP routes into the Enterprise IGP

    D

    Tunneling the packets for the i BGP connection between R1 and R2


    正确答案： A,C
    解析： 暂无解析

  • 第23题：

    多选题
    R1 and R2 exchange HSRP between each other in the Company network.  In which three HSRP  states do routers send hello messages？（）
    A

    Learn

    B

    Speak

    C

    Standby

    D

    Listen

    E

    Active

    F

    Remove


    正确答案： A,D
    解析： 暂无解析

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