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H12-831_V1.0 HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Questions and Answers

Questions 4

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?

Options:

A.

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

B.

Engineer A's operation error

C.

Engineer B's operation error

D.

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

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Questions 5

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

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Questions 6

In the multi-level RR scenario, a large number of secondary RRs will be connected to the primary RR, which may lead to BGP of the primary RR. The routing table overflows, what method can be used to reduce the risk of overflowing the routing table of the advanced RR BGP?

Options:

A.

ORF

B.

route aggregation

C.

routing control

D.

set the sameCluster-ID

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Questions 7

What is the Router-ID of OSPFv3?

Options:

A.

100bit value

B.

128bit value

C.

32bit value

D.

64bit value

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Questions 8

As shown in the figure, Sitel and Site2 need to achieve mutual access through the operator's BGP/MPLS IPVPN. A known

The public network tunnel between PE1 and PE2 has been established (the label information is shown in the figure), and PF1 has

The 192.168.1.0/24 network segment route is advertised to PE2 through the MP.JIBGP neighbor relationship, and the route learning is normal. When grabbing between P and PE1, when Site2 accesses the 192.168.1.0/24 data of Sitel, the outermost label

What should the sign be?

FEC In/Out label

1.1.1.1/32 6662/3

Options:

A.

6661

B.

C.

6662

D.

8888

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Questions 9

[According to this picture, Peimen can judge?

cR3>display ipv6 routing-table protocol isis

Options:

A.

R3The device type must beLevel-1-2

B.

unable to judgeR3type of device

C.

R3The device type must beLevel-1

D.

R3The device type must beLevel-2

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Questions 10

Part of the configuration of R1 is as follows. Which statement about IS-IS on R1 is correct?

3vpn-instarwce rr

level- 2

cost-style wide

-erntity 47.ccOa 3eft)btxlci-dael

Options:

A.

process2with process3The routing information is isolated

B.

process1Contains only global routing information

C.

process1Also contains global routing information. andVRFtt,rrrouting information

D.

process2with process3routing information will be shared

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Questions 11

BGP4+ carries the next hop address of the IPv6 route through the Next Hop attribute in the Update packet. (Moved into Attribute 14)

Options:

A.

True

B.

False

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Questions 12

How many bits are there in the label field of PLS?

Options:

A.

1

B.

8

C.

3

D.

20

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Questions 13

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

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Questions 14

The RR rules for advertising routes violate the IBGP split horizon rules, which may cause loops in the AS. Which routing attributes does RR use to prevent loops?

Options:

A.

Cluster List k

B.

Nexthop

C.

AS-PATH

D.

Originator ID

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Questions 15

The default MPLS label publishing mode, label distribution control mode and label retention mode of Huawei routers are respectively

Options:

A.

Label release method - downstream autonomous methoD. label distribution control method - free methoD. label retention method - independent

B.

Label release method - free methoD. label distribution control method - independent methoD. label retention method - downstream autonomous method

C.

Label release method - downstream autonomous methoD. label distribution control method - independent methoD. label retention method - free method

D.

Label release method-independent methoD. label distribution control method-free methoD. label retention method-downstream autonomy

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Questions 16

An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. The logical topology of the network is shown in the figure. Regarding the transmission of IPv6 routes between the two devices, which of the following Is a statement wrong?

Options:

A.

The Next_Hop attribute must be an IPv6 global unicast address when routing

B.

BGP4+ transmits routing information between peers through Update packets

C.

If the MP_REA, CH_NLRI attribute is carried in the Update packet, it indicates that the advertisement is a reachable route

D.

When the route is transmitted, it will carry recognized mandatory attributes such as AS_Path

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Questions 17

As shown in the figure, all routers run OSPF, because R3 is in the backbone area, so in the LSDB of R3 There are no three types of LSAO

Options:

A.

True

B.

False

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Questions 18

The Discovery message of LDP is used for neighbor discovery, and LDP has different discovery mechanisms when discovering neighbors. The following statement about the Discovery message in the basic discovery mechanism is correct

Options:

A.

TCPAfter the connection is establisheD. LSRdo not continue sendingHello Message

B.

Purpose of the messageIPaddress is multicastIPaddress224.0.0.2

C.

This message is encapsulated inUDPIn the message, the destination port number is646

D.

The message is sent to the specifiedLDP Peer

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Questions 19

What is the default aging time of the MA, C address table of Huawei switches?

Options:

A.

300

B.

500

C.

400

D.

5

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Questions 20

In OSPF, the A, BR will convert all type 7 L SAs in the NSSA area to type 5 L SAs.

Options:

A.

True

B.

False

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Questions 21

The routing attributes of the three routing entries are shown in the figure. Assuming that the next hops of the three routing entries are all reachable, when these three routing entries are

After the entries arrive at the BP router in order, by default, BGP will finally call a route

entry?

Options:

A.

Route B

B.

Route C

C.

Route A

D.

slightly

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Questions 22

In addition to virtual connections, what type of IPv6 address is the source IPv6 address of OSPFv3's Hello text?

Options:

A.

IPv6anycast address

B.

unique local address

C.

Global Unicast Address

D.

link-local address

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Questions 23

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

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Questions 24

Which of the following statements about MPLS header TTL is correct?

Options:

A.

MPLSTcorrect toTTLis handled in two ways. one isIPmessage is enteringMPLSwhen the network MPLSheadTTLcopyIPTTLValue: The other is at the entranceLERWillMPLSheadTTLsystem-settings for 255

B.

Can prevent infinite loop forwarding of packets

C.

copyIPTTLThe way the value is handled is hiddenMPLSDomainLSRPlayed a role in the safety of the lake

D.

Banned from holding shellsTTLin the case of,tracertcan see passingMPLSDomainLSR

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Questions 25

What is the default aging time of the MA, C address table of Huawei switches?

Options:

A.

300

B.

500

C.

400

D.

5

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Questions 26

During the process of viewing the debug input through the SSH terminal, there is a lot of pop-up information. Which of the following operations can make the monitor terminal no longer pop up the debug message?

Options:

A.

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

B.

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

C.

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

D.

exit currentMonitorinterface, re-SSHLog in to the device to open a new oneMonitorinterface

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Questions 27

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

Options:

A.

1 default route

B.

2 equal-cost default routes

C.

2 default routes with different costs

D.

4 equivalent default routes

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Questions 28

As shown in the figure, OSPF is enabled on all the routers. The IP address marked in the figure is the IP address of the loopbackO interface of the device. The LoopbackO of R1 and R2 is advertised in area 1, the LoopbackO of R4 is advertised in area 0, and the LoopbackO of R3 and R5E is advertised in area 0. In area 2, which of the following IP addresses can ping each other?

Options:

A.

10.0.2.2and10.0.3.3 (Non-backbone area received3class received does not count)

B.

10.0.3.3and10.0.5.5 (same area1kind)

C.

10.0.4.4and10.022 (normal calculation3kind)

D.

10.022and10.0.5.5 (Non-backbone area received3class received does not count)

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Questions 29

A campus deploys OSPF to implement network interworking. The LSDB of R2 is shown in the figure. From this LSDB. it is possible to

What information was obtained?

Options:

A.

ArealNone inType3 LSA. maybeR2in the area1In the correct directiontype3 LSAfiltered

B.

Area 1forNSSAarea

C.

R2WillType7 LSAThe default route is converted toType5 LSAdefault route for

D.

R2existOSPFThe default route is delivered in the process

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Questions 30

Please match 0SPFv3LSA with its transmission range.

Options:

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Questions 31

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?

Options:

A.

R3andR4the interconnect interfacecircuit-typeMismatch

B.

R3andR4different area codes

C.

R3andR4ofIS-LevelMismatch

D.

R3andR1ofIIHAuthentication failed

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Questions 32

multiple equal-cost routes may appear. About the IS-IS network , which of the following descriptions is false?

Options:

A.

When the number of equal-cost routes in the network is greater than the number configured by commands, and these routes have the same priority, the next-hop device is preferredSystem 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

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Questions 33

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

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

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Questions 34

The rollback operation of project cutover can be temporarily determined according to the situation during cutover, and no advance plan is required.

Options:

A.

True

B.

False

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Questions 35

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

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Questions 36

IEIF expands the functions of OSPF by taking advantage of the strong expansibility of OSPF. To enable it to support IPv6 networks, the expanded protocol is called OSPFv3. OSPFv3 is compatible with OSPFv2.

Options:

A.

True

B.

False

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Questions 37

Regarding the sham link, which of the following descriptions is wrong?

Options:

A.

sham linkThe coat is twoVPNlinks between instances, eachVPNThere must be one in the instancesham linkthe endpoint address, it must bePEon the routerVPNone in the address space has32bitmaskedLoopbackinterface address

B.

becauseVPNflow is throughMPLSBackbone forwarding,sham linkThe routing cost should be less thanbackdoorroadOSPFrouting cost

C.

sham linkThe endpoint address of theBGPasVPhv4address published. passedsamlikThe route can also be reconfigured withVPNv4The form of routing is introduced toBGP

D.

Sham linkIt can be configured in any area and needs to be manually configured and the local endVPNThe instance must have tosham linkdestination address (peerPEofsham linkendpoint address) routing

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Questions 38

The partial configuration of R1 is as follows. Which statement about OSPF on R1 is correct?

ospf 1 router-id 172.16.1 J

area 0.0.0.0

network 10.1.12.1 0.0.0.0

network 10.1.13.1 OQO.O

network 172 J 6.1.1 0.0.0.0

Options:

A.

R1The device type isLevel-2

B.

R1The device type could not be determined

C.

R1The device type isLevel-1

D.

R1The device type isLevel-1 -2

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Questions 39

To speed up the detection of link failures in an IS-IS network, you can associate IS-IS with BFD.

Options:

A.

True

B.

False

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Exam Code: H12-831_V1.0
Exam Name: HCIP-Datacom-Advanced Routing & Switching Technology V1.0
Last Update: May 18, 2024
Questions: 266
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