What is wrong with this configuration description is: [Huawei]dhcp enable[Huaweijinte GigabitEthernet 0/0/1 [Huawei-GigabitEthernet0/0/1 ]dhcp option82 insert en [Huawei-GigabitEthernet0/0/1 ]dhcp snooping enable [Huawei-GigabitEthernet0/0/1]dhcp snooping trusted

turn onDHCP Snoopingconfiguration can be used to preventARPspoofing attack

ifGigabitEthemnetOIO/1received by the interfaceDHCPIn the request message, there is noOption82of SutOptioninformation, the device will generateOption82,and insert it into the message

turn onDHCP Snoopingconfiguration can be used to preventDHCP ServerCounterfeiter Attack

configureGigabitEthernetO/0/lThe interface is a trusted interface

turn onDHCP Snoopingconfiguration can be used to preventARPspoofing attack

Ethernet is a broadcast-enabled network, and once there are loops in the network, this simple factory broadcast mechanism can have disastrous consequences. Which of the following phenomena may be caused by loops?

The device cannot log in remotely

use on devicedisplay interfaceWhen commanding to view interface statistics, it is found that the interface receives a large number of broadcast packets

pass throughpingSerious packet loss during network test with command

The device cannot log in remotely

use on devicedisplay interfaceWhen commanding to view interface statistics, it is found that the interface receives a large number of broadcast packets

pass throughpingSerious packet loss during network test with command

As shown in the figure, an engineer uses 4 routers to test branch network interoperability. Among them, R1, R2, and R3 in branch 1 deploy OSPF to implement network interoperability. R2, R3, and R4 in branch 2 deploy IS-S to implement network interoperability. Now the engineer wants to implement R1 to access the loopback interface address of R4. Which of the following operations can meet this requirement?

existR2ofOSFFprocess neutralizationIS-ISDuring the process, the default route is advertised separately

only atR2ofIS-ISDuring the process, the default route is advertised

only atR2ofOSPFDuring the process, the default route is advertised

The IS-IS Level-1 neighbor relationship between R3 and R4 is not established. According to the information in this figure_What is the possible reason?

R3andR4the interconnect interfacecircuit-typeMismatch

R3andR1ofIIHAuthentication failed

An engineer uses two routers to test IPv6 services, and runs 0SPFv3 to implement IPv6 network interconnection. R1 is required to be able to access the loopback interface address of R2. The engineer checked the OSPFv3 routing table entry of R1, as shown in the figure, and found that there was no route to the loopback interface address of R2. Which of the following reasons could not be the cause?

R2 does not have 0SPFv3 enabled on the loopback interface

R2 advertises the loopback interface into different OSPFv3 processes

R2 does not have 0SPFv3 enabled on the loopback interface

R2 does not use network to advertise loopback address in area 0

R2 is not configured with the Router ID used in the OSPFv3 process

aboutOSPFWhich of the following statements is false?

For a pair of additional 0hers on an Ethernet link, it is normal to stop clearing in the 2-72 state

Stalling in ExStart state may be a bad match between neighbor routers

stagnantINThe it state indicates that the router has received the neighbor'sHello message. butHell messagedoes not include this routerOSPF Router ID

The two router databases are synchronized, SPFAn error occurred in the calculation, it must be because of the RouterID repeated

In the same environment, engineers A and B execute the tracert command. The destination addresses are the same, but the paths are different. What are the possible reasons?

The destination port numbers of the UDR packets serving tracert are different, and the hashes reach different equivalent next hops.

The phenomenon is abnormal, the device has an operating system failure

The destination port numbers of the UDR packets serving tracert are different, and the hashes reach different equivalent next hops.

Which of the following is included in the routine collection of basic equipment information?

The software version the device is running

Whether the configuration is saved

The software version the device is running

Whether the configuration is saved

According to this picture, we can judge that R4 is on?

2 default routes with different costs

As shown in the figure, in a medium-sized network, BGP generally deploys dual RRs to improve R reliability. When deploying dual RRs, the Cluster IDs of the two RRs are generally set to be the same. The reason for this is

Prevent RR from receiving too many routes and causing insufficient memory

Prevent the client from receiving too many routes and causing it to run out of memory

According to this picture, you can judge

R1 with 3000:FDEA::3 is IB6P neighbor

R1 learned route 3002 through IBGP::3/128

The optimal outgoing interface for R1 to access room 3000: FDEA::3 is GigabitEtherneto/0/1

R1 with 3000:FDEA::3 is IB6P neighbor

R1 has a TCP connection with 3000:FDEA::3

R1 learned route 3002 through IBGP::3/128

IS-IS is a link-state routing protocol that uses the SPF algorithm for route calculation. As shown in the figure, a campus deploys both IPv4 and IPv6 and runs IS-IS to achieve network interconnection. R2 only supports IPv4. Which of the following statements is true about the topology calculation of this network?

By default, since R2 does not support IPv6, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R3-R4

If you want IPv4 and IPv6 network computation to form the same shortest path tree, you need to run the ipv6 enable topology ipv6 command to enable the IPv6 capability in the IS-IS process.

By default, since R2 does not support IPv6, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R3-R4

By default, IPv4 and IPv6 networks will be calculated separately to form different shortest path trees

By default, in the shortest path tree formed by IPv6 network calculation, the path from R1 to R4 is: R1-R2-R4. Since R2 does not support IPv6, R2 will directly discard IPv6 packets after receiving them, causing traffic loss.

The following description of TL in PLSHeader is correct:

Similar to the TTL in the IP header, it is used to prevent packet loops

Control of upstream equipment for label distribution

Similar to the TTL in the IP header, it is used to prevent packet loops

In PLSVPN, in order to distinguish IPv4 prefixes that use the same address space, the value of R0 is added to the IPv4 address. The correct description of the following options is:

On a PE device, each VP instance corresponds to a value of 0. On the same PE device, the RD value must be unique.____, ____, ____.

RD is encapsulated in Update message as BGP extended community attribute during delivery

On a PE device, each VP instance corresponds to a value of 0. On the same PE device, the RD value must be unique.____, ____, ____.

RD can be used to control the publication of 1 routing information

RD is encapsulated in Update message as BGP extended community attribute during delivery

After the PE receives the IPv4 route from the CE, it adds RD to the IPv4 route to convert it into a globally unique VPN-IPv4 route, and publishes it on the public network

About the difference between NSR and NSF, which is correct?

NSF must rely on neighbor routers to complete

NSP can be done without neighbor routers

NSF must rely on neighbor routers to complete

Both NSR and NSP require neighbor routers to complete

NSR must rely on neighbor routers to complete

Huawei H12-831_V1.0 Practice Test 1 - Free Online Exam Prep & Questions

Question 1 / 40

Deployment in a small and medium-sized networkOSPF,When viewing the routing table of a device, it is found that there are only directly connected routes.

It is not possible for the operation to cause the fault?

Routing protocol configuration error

Incorrect routing policy configuration

Port address assignment problem

The configured user permissions are too low

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