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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

CutoverThe previous information collection can be used to determine whether the services before and after the cutover are normal.

Options:

A.

right

B.

wrong

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Question 2

Which of the following are advantages of VLAN aggregation?

Options:

A.

decreasedIPwaste of address

B.

added availableM LANquantity

C.

Increased addressing flexibility

D.

accomplishSub-VLANIsolation between broadcast domains

Question 3

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

Question 4

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 5

Please match the command with the function implemented.

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 6

When deploying MPLS/BGP IP VPN, which of the following descriptions is wrong about using BGP to exchange routing information between PEs and CEs?

Options:

A.

existCEIn the case of multi-homing, enableBGP ASThe number substitution function may cause routing loops that can be passed throughBGP SoDpreventVPNIntra-site routing loops

B.

whenPEandCEbetweenBGPWhen exchanging routing information, if twoVPNThe autonomous system the site is in uses the same privateASnumber, can be passed throughASThe number replacement function is to use any specifiedASreplace the received private network route with theASnumber to preventASRoutes are discarded due to duplicate numbers

C.

existHub&Spokescene, whenHub-CEandHub-PEuseIGPTimeSpoke-PEandSpake-CEcannot makeEBGP

D.

whenPEandCEbetweenBGPWhen exchanging routing information, you do not need toPEPerform private network route import on theBGPoperation

Question 7

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

Question 8

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

Options:

A.

Prevent RR from receiving too many routes and causing insufficient memory

B.

prevent suboptimal

C.

prevent loops

D.

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

Question 9

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

Question 10

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

Options:

A.

True

B.

False

Question 11

EGP authentication can prevent illegal routers from establishing neighbors with B, CP routers. B, CP authentication can be divided into MD5

Authentication and Keychain authentication, which of the following BGP documents will carry the B, CGP Keychain authentication letter

interest? (header carry)

Options:

A.

Open

B.

Update

C.

Notice

D.

Keepalive

Question 12

When a fault occurs, the fault can be classified to reduce the scope of fault location. Which of the following is not an interface configuration fault?

Options:

A.

Inconsistent duplex modes of interfaces on both ends

B.

IPaddress conflict

C.

Interface authentication is inconsistent

D.

Inconsistent luminous power at both ends

Question 13

Run the display ip interface GEO/D/D command to view statistics about ping packets received on the interface.

Options:

A.

True

B.

False

Question 14

From this figure, it can be known that

Options:

A.

R1access172.17.1.5There is a loop

B.

R1have access172.17.1 5routing

C.

R1no access172.17.1.5routing

D.

R1access172.17.1.5There is no problem with the path

Question 15

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

Options:

A.

NSFCan be done without neighbor routers

B.

NSRMust rely on neighbor routers to complete

C.

NSFMust rely on neighbor routers to complete

D.

NSRandNSFBy6Requires neighbor router to complete

Question 16

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 17

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 18

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 19

From this figure, we can conclude that

Options:

A.

R4not anyIS-ISNeighbor

B.

R4andee8c.aOc2.baf3establishedIPv4,IPv6ofIS-ISNeighbor

C.

R4andee8C. aOe2.baf3only establishedIPv6ofIS-ISNeighbor

D.

R4andee8c.aOc2.bat3only establishedIPv4ofIS-ISNeighbor

Question 20

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 21

A campus has deployed IPv6 for service testing. In the early stage of deployment, engineers wanted to achieve network interoperability through IPv6 static routes. When creating an IPv6 static route. You can specify both the outbound interface and the next hop, or only the outbound interface or only the next hop.

Options:

A.

True

B.

False

Question 22

As shown below:

Options:

A.

R3andR1ofIS-LevelMismatch

B.

R3andR1different area codes

C.

R3andR1ofIIHAuthentication failed

D.

R3andR1ofSystem

Question 23

(Multiple Choice) Which LSAs in OSPFv3 can be flooded in an area?

Options:

A.

Link-LSA

B.

Inter-Area-Router-LSA

C.

Inter-Area-Prefix-LSA

D.

Intra-Area-Prefix-LSA

Question 24

When configuring the DHCP Relay function on the device, the VLAN ANIF interface of the relay connection client must be bound with a DHCP server group, and the IP address of the proxy DHCP server must be configured in the bound DHCP server group.

Options:

A.

True

B.

False

Question 25

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

Question 26

Configuring DHCP Snooping can be used to prevent imitator attacks, so the configuration process needs to include the following

What are the steps?

Options:

A.

enable globalDHCP SnoopingFunction

B.

enable globalDHCPFunction

C.

Configure Interface Trust Status

D.

enable interface orVLANofDHCP SnoopingFunction

Question 27

After the cutover acceptance is completeD. what work still needs to be performed in the closing stage?

Options:

A.

Transfer training

B.

data transfer

C.

Acceptance summary

D.

field defense

Question 28

In BGPIMPLS IP VPN, if the OSPF protocol is used between PEs and CEs to exchange routing information, the domain identifier (Domain ID) is used to distinguish whether the incoming routes in the VPI instance come from the same OSPF domain.

Options:

A.

True

B.

False

Question 29

What is the purpose of configuring LSP fragmentation on an IS-IS device?

Options:

A.

make the device unbuildableIS-ISNeighbor

B.

enable the device to support moreIS-ISrouting entry

C.

make the device unable to learnIS-ISrouting information

D.

no real purpose

Question 30

The configuration shown is performed on R2 to filter all incoming routes. Suppose there is a BGP route with the AS_Path attribute of [100200300400] on R1 that needs to be sent to R2. Please help the network administrator to adjust the AS order in the AS_Path attribute of the route on R1 to ensure that the route entry will not be filtered by the routing policy of R2____, ____, ____, ____.

100 This space corresponds to the [A] space in the routing policy

200 This space corresponds to the [B] space in the routing policy

300 This space corresponds to the [C] space in the routing policy

400 This space corresponds to the [D] space in the routing policy

Options:

Question 31

As shown in the figure, OSPF is enabled on all interfaces of the router, and the ip address identified in the figure is the device's IP address.

Loopback0 presses the IP address of the port, RI, R2, R3EJLoopbacD is advertised in the area 1, R4

LoopbacfkD advertises in area D and which of the following functional addresses can be pinged between the LoopbackD announcements of R5 and R5 in area 2?

Areal

10.0.1.1/32

A,10.0.3.3 10.0.5.5

B,10.0.4.4and10.0.2.2

C,10.0.2.2and10.0.3.3

D,10.0.2.2 10.0.5.5

Options:

Question 32

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

Question 33

MPLS-straight is slower than IP forwarding.

Options:

A.

True

B.

False

Question 34

LDP messages are exchanged between LSRs running the LDP protocol. LDP messages can be divided into four types according to their functions. Which of the following is not a message type of LDP?

Options:

A.

discovery message

B.

announcement message

C.

conversation message

D.

label exchange message

Question 35

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

Options:

A.

1

B.

8

C.

3

D.

20

Question 36

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

Question 37

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?

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\

Question 38

The router ID of OSPF V3 needs to be configured in dotted decimal with a length of 128 bits.

Options:

A.

True

B.

False

Question 39

During the test phase of the cutover, the criteria to indicate that the test has been completed are:

Options:

A.

IPThe configuration view result of the device is normal as the standard

B.

Test that the network service is normal as the standard

C.

The upper-layer application service test carried by the network is normal as the standard

D, check that the network is running normally as a standard

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Total 266 questions