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Huawei H12-831_V1.0 Dumps

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Total 266 questions

HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Questions and Answers

Question 1

From the user's point of view, any phenomenon that affects the business can be defined as a fault.

Options:

A.

True

B.

False

Question 2

According to this figure, it can be known that in VLAN 300, from 17:22:38 to 17:22.44,00e0-fc3d-3bdB. 0 MA, C flaps occurred on 2020-06-04.

as

Options:

A.

5

B.

65535

C.

300

D.

1

Question 3

If faced with a complex network failure, and it is estimated that the troubleshooting cannot be completed in a short period of time, and the user urgently needs to restore the availability of the network, then the correct approach is.

Options:

A.

Tell the user it's not possible

B.

Directly build an alternative network environment without notifying customers

C.

Always try to troubleshoot without informing the user of the current troubleshooting difficulty

D.

Communicate with users whether it is possible to skip the faulty node and build an alternative network environment

Question 4

As shown in the figure, a park has deployedIPv6For business testing, the network has4router. run

0SPFV3Realize network interconnection. about theOSPFV3network generatedLSA. Which of the following statement it's wrong?

as

Options:

A.

R1will produceRouter-LSADescribing the device interface information will be received at the same timeR2andR3produced Router-LSA

B.

R1ofLSDBhaveR3producedNetwork LSA. illustrateR3may be from this linkDR

C.

R1will receiveR2produced2indivualLink-LSA. Describe separatelyR2Information about the two links connected

D.

R2asA, BRWill produceInter-Area-Prefix-LSAdescribeArea 1ofIPv6address prefix, and advertise GiveR1andR3

Question 5

When there are multiple redundant links in the IS-S network, multiple equal-cost routes may appear. Which of the following statements is false about equal-cost routing within an IS-IS network?

Options:

A.

When the number of equal-cost routes in the network is greater than the number configured by the command, and these routes have the same priority,

Preferred next hop deviceSystem IDLarge routes for load balancing

B.

If load sharing is configured, the traffic will be evenly distributed to each link

C.

After configuring equal-cost route priorityJS-ISWhen the device forwards the traffic reaching the destination network segment, it will not adopt the load balancing method, but forward the traffic to the next hop with the highest priority

D.

For each route in the equal-cost route, a priority can be specified, and the route with higher priority will be preferred. the rest as backup routes

Question 6

In the VLAN aggregation technology, multiple Sub-VLANs are used to isolate wide-open domains, and these Sub-VLANs are aggregated.

Synthesizing a logical Super-VLAN, a company divides different departments into different Sub-VLANs, because

Sub-VL AN not only includes physical connection, but also can establish three-layer VLAN ANIF interface, which can directly carry out three-layer communication with external network.

Options:

A.

True

B.

False

Question 7

In the absence of a header, the Domain ID of each OSPF process running on the router and the process ID of the process

Be consistent and can be modified under the process through the domain-id command

Options:

A.

True

B.

False

Question 8

When deploying BGPIMPLS IPVPN, when two VPNs have a common site, the common site must not use overlapping address space with other sites of the two VPNs.

Options:

A.

True

B.

False

Question 9

Which of the following are static information coke analysis?

Options:

A.

Interface Type

B.

Packet loss rate

C.

License

D.

Equipment type

Question 10

In the process of viewing the debug output through the SSH terminal, a lot of information pops up. Which of the following operations can

Make the Moni tor terminal no longer pop up debug messages?

Options:

A.

exit currentMonitorinterface redesignSSHLog in to the device to open a new oneMonitorinterface

B.

Open Notepad and enterundo debugging a 11,Copy the command line and paste it intoMonitorinterface

C.

Open Notepad$SLIAundo terminal monitor,Copy the command line and paste it intoMonitorinterface

D.

open notepad inputundo terminal debugging,Copy the command line and paste it intoMonitorinterface

Question 11

What is wrong with this configuration description is:

as

[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

Options:

A.

ifGigabitEthemnetOIO/1received by the interfaceDHCPIn the request message, there is noOption82of

SutOptioninformation, the device will generateOption82,and insert it into the message

B.

turn onDHCP Snoopingconfiguration can be used to preventDHCP ServerCounterfeiter Attack

C.

configureGigabitEthernetO/0/lThe interface is a trusted interface

D.

turn onDHCP Snoopingconfiguration can be used to preventARPspoofing attack

Question 12

There is the concept of forwarding equivalence class FEC in MPLS. The following description is wrong:

Options:

A.

MPLSGrouping packets with the same forwarding processing method is calledFEC

B.

a forwarding equivalence classFECA unique label value is assigned on all routers

C.

sameFECgrouped inMPLSThere will be different processing in the network

D.

FECThe division is very flexible. Can be the source address, and the address, source port, destination port, protocol type or

VPNEqual to any combination of division basis

Question 13

A network engineer entered the following information when troubleshooting OSPF faults. Based on this, you can judge what causes the adjacency relationship to fail to be established normally?

as

Options:

A.

Authentication passwords do not match

B.

Inconsistent area type

C.

Hell. Inconsistent message sending interval

D.

interfaceIPInconsistent address masks

Question 14

In an operator's MPLSVPN network, there are two devices PE1 and PE2 for MPLSVPN data forwarding. PE1 receives a private network route of 172.16.1.0/24 from the client, and converts it to a VPNv4 route on PE1 and assigns a label of 1027 Released to PE2. The outgoing label of the MPLS LSR-ID of PE2 reaching PE1 is 1025o When a client on PE2 accesses 172.16.1.0/24, the frame sent by PE2, the inner and outer labels should be a combination of the following 6 options?

Options:

A.

outer layer label:1025:inner label:1027

B.

outer layer label:1027:inner label:1027

C.

Layer Label:1027:inner label:1025

D.

Layer Label,1025:inner label:1025

Question 15

0SPFV2 is an IGP running on an IPv4 network; 0SPFvV3 is an ICPO running on an IPv6 network the packet types of OSPFV3 and OSPFV2 are the same, including .Hall. message, DD message, LSU message, LSU packets and SAck packets. Which of the following statements is correct about 0SPFV3 packets?

Options:

A.

0SPFv3Complete packet authentication using the authentication field in the packet header

B.

OSPFV3The link-local address is used as the source address of the sent packet, and the packet can be forwarded outside the range of the originating link

C.

OSPFv3useIPv6multicast addressFFO2::5heheFFO2:.6sendOSPFv3message

D.

0SPFV3ofHelloThe packet carries the router interfaceIPv6address prefix list

Question 16

If the BFD session goes down, the direct link will fail.

Options:

A.

True

B.

False

Question 17

In an MPLS network, functions such as neighbor discovery, session establishment and maintenance, and label management are implemented by exchanging LDP messages between SRs running the DP protocol. To ensure the reliability of message delivery, all LDP messages are sent and received based on TCP connections.

Options:

A.

True

B.

False

Question 18

As shown in the figure, MPLS LSP is set up in the network, and the goal is to establish an LDP session between SWA and SWB.

as

Options:

A.

Configured correctly

B.

No global enable requiredMPLS

C.

No need to enable on the portMPLS

D.

two devicesmpls Isr-idcannot be configured the same

Question 19

OSPFV2 is an IGP running on an IPv4 network; OSPFV3 is an IGPo running on an IPv6 network. The basic working mechanism of OSPFv3 is the same as that of OSPFV2, such as the election of DR and B, DR. As shown in the figure, an engineer uses 3 routers to test IPv6 services. He wants to realize the interconnection of IPv6 networks by running OSPFV3.

Pass. Which of the following statements about the election of the network DR is correct?

as

Options:

A.

After the network converges, engineers modifyR1the priority is100,R2the priority is10,R3Keep the default value. When the network converges again,R1forDR, R2forB, DR

B.

After the network converges, a new device is added to the broadcast linkR4,R4the priority is150. When the network converges again,R4forDR

C.

After the network convergesR1Power off and restart, when the network converges again,R3forDR

D.

After the network converges,R1forDR

Question 20

After a fault occurs, you need to collect and back up various types of fault information in time as a reference for troubleshooting. In addition, when seeking emergency assistance from Huawei Technologies Co., Ltd.

Options:

A.

True

B.

False

Question 21

Which of the following statements about LDP Label Retention - Free Way is true:

Options:

A.

Requires more memory and tab space

B.

Keep all labels distributed by neighbors

C.

Only keep labels from next-hop neighbors and discard all labels from next-hop neighbors

D.

Save memory and label space

Question 22

After the cutover is completeD. it is generally necessary to check the following items?

Options:

A.

Software version

B.

physical topology

C.

data flow

D.

control plane entry

Question 23

If the sticky MA, C function is enabled on an interface, by default, the number of MA, C addresses learned by the interface is as large as

few?

Options:

A.

15

B.

5

C.

10

D.

1

Question 24

BGP routing policies can control the advertisement and reception of routes.

Options:

A.

True

B.

False

Question 25

According to this picture, we can judge?

display ospf Isdb router self-originate OSPF Process 1 with Router ID 10.0.12J Area: 0.0.0.0

Type:Router

Lsid: 10.0.12 J

Adv rtr: 10.0.12.1

Ls age: 312

Len: 36

Options : A, BR E

\seq#:80000013

1chksum : 0xc61c

ILink count: 1

1* Link ID: 10.0.12.2

IData : 10.0.12.1

,Link Type: TransNet

.Metric : 1

Options:

A.

R1ofsystem IDYesee8c.a0c2.bafl

B.

R1existinglevel", andlevel-1-2Dimensional state information of

C.

R1onlylevel-2link state information

Ds level-2In the network, there are a total of8Tailu Electric

Question 26

According to this picture, you can judge

as

as

Options:

A.

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

B.

R1 with 3000:FDEA::3 is IB6P neighbor

C.

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

D.

R1 learned route 3002 through IBGP::3/128

Question 27

The input information of a router is as follows. Which of the following causes the OSPF adjacency cannot be established normally?

as

Options:

A.

Area code does not match

B.

Inconsistent area type

C.

interfaceIPInconsistent address masks

D.

Hell. Inconsistent message sending interval

Question 28

Which of the following actions may affect the normal operation of the customer's network?

Options:

A.

Device naming

B.

software upgrade

C.

Hardware expansion

D.

Routing Protocol Configuration Changes

Question 29

As shown below:

as

Options:

A.

R3andR1ofIS-LevelMismatch

B.

R3andR1different area codes

C.

R3andR1ofIIHAuthentication failed

D.

R3andR1ofSystem

Question 30

A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFv3 to implement IPv6 network interconnection. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of the Link-LSAs. Which of the following statements is true about the description of this LSA?

as

Options:

A.

The router that generates this LSA is R2 port R2 connected

B.

IPv6 address prefix for GEO/0/0: 2001:DB8:2345:23::/64

C.

The link-local address of R2 interface GEO/0/0 is: FE80::2E0:FCFF:FEC, D:4F79

D.

The SA shows 2 does not support external routing, but participates in IPv6 routing calculation

Question 31

A router's Network LSA is shown in the figure. Which of the following statements is correct?

display ospf Isdb network self-originate OSPFProcess1 with Router ID 10.0.12.2

Area: 0.0.0.0

Type: Network

Lsid: 10.0.122

Advrtr: 10.0.12.2

Ls age: 824

Len: 32

Options : E

\seq#:80000002

1chksum : 0x8970

INet mask: 255.255.255.0

IPriority : Low

IAttached Router 10.0.12.2

.Attached Router 10.0.12.1

Options:

A.

by the routerDRpriority is100

B.

of this routerRouter IDfor10.0.12.2

C.

The network segment where the router is located is10.0.12.0 24

D.

This router isDR

Question 32

Which of the following statements is true about the role of ping and tracert?

Options:

A.

Pingthrough one-wayicmp echo requestPacket inspection and bidirectional reachability of the correct end

B.

TracertMust be able to trace every hop from source to destinationIPaddress

C.

pingThe reachability from the local end to the peer end is verifieD. but it does not mean that the peer end to the local end must be reachable

D.

tracertandpingThe function is the same, just the name is different

Question 33

Regarding the label space of MPLS, the description is wrong:

Options:

A.

penultimate jumpLSRWhen performing label exchange, if the exchanged label value is found to be3,By default, the label is popped and the message is sent to the last hop

B.

1024Above areLDP,RSVP-TE. MP-BGPLabel space shared by other dynamic signaling protocols

C.

16~1023is staticLSPand staticCR-LSPshared tab space

D.

If the out tag value is0,The router will directly discard the packet

Question 34

Which of the following is not a hardware preparation for cutover?

Options:

A.

Test the operation of the board

B.

Power-on test

C.

Device version check

D.

Cable Continuity Test

Question 35

Please match the command with the function implemented.

as

Options:

A.

display device-® Display version-® Display memory-usage-® Display cpu-usage-③

B.

display device-® Display version-® Display memory-usage-® Display cpu-usage-④

C.

display device-® Display version-® Display memory-usage-® Display cpu-usage-④

D.

display device-® Display version-® Display memory-usage-® Display cpu-usage-④

Question 36

As shown in the figure, on the R1 router, the network administrator can control the path of the traffic entering AS100 after modifying the value of the routing entry sent to R2 through the routing policy.

as

Options:

A.

Yes

B.

wrong

Question 37

What fields are added in Update in order to advertise IPv6 routes in BGP4+.

Options:

A.

a new oneNLRITypes of"Pv6_NLR,which carryIPv6 NLRI prefix lengthandIPv6 NLRI prefix

B.

A new path attribute:MP_UNREA, CH_NLRI

C.

A new path attribute:MP_REA, CH_NLRI

D.

a new path attribute:IPv6_REA, CH_NLRI

Question 38

What is the meaning of display current-configuration I include vlan command?

Options:

A.

View eachVLANphysical interface information bound to the

B.

See what's currently createdVLAN

C.

CheckVLANIFinterfaceIPaddress

D.

View all included"VLAN"Configuration of keywords

Question 39

Engineer Guan used two routers to test IPv6 services. By running the BGP4+ module to communicate with the branch, as shown in Juxin, an engineer captured packets to view the Updte packets sent by R1. Which of the following statements is true about the description of the message information?

as

Options:

A.

This message describes only oneBGPAttribute: Multi-protocol unreachableNLRIAttributes

B.

This message describes the current cancellationIPv6routing

C.

The maximum and the preceding length of the routing address described in this packet is:2001:db8:2345:l::l/128

D.

The next hop address of the route described in this packet is:2001:db8:2345:l::l\

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Total 266 questions