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Free Huawei H12-831 Practice Questions & Answers 2026 Part3

Are you preparing for the Huawei H12-831 certification exam? SPOTO offers the Huawei H12-831 Premium File; all questions are aligned with the latest exam content and come with expert-provided answers. Our question banks cover the latest question types, core concepts, and detailed explanations, helping you familiarize yourself with the exam format and difficulty level. Whether you are reviewing core concepts or simulating a real exam environment, these resources will rapidly boost your confidence and readiness.
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Question #1
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #2
The output information of a switch is shown in the figure. Which of the following can be determined from this information?
A. hen the average rate of unicast packets is known to be 2500 pps, GE0/0/1 will be closed
B. hen the average rate of unknown multicast packets is 1500 pps, GE0/0/1 will block the multicast packets
C. he administrator configured the traffic suppression function on the GE0/0/1 port of the switch
D. fter GE0/0/1 blocks broadcast packets, they will be forwarded normally only when the average rate of broadcast packets is less than 1000ps
View answer
Correct Answer: D
Question #3
CutoverThe previous information collection can be used to determine whether the services before and after the cutover are normal.
A. right
B. wrong
View answer
Correct Answer: A
Question #4
The description of the MPLS forwarding mechanism is correct
A. The system automatically allocates aI
B. whenIPmessage entryMRLSdomain, the first thing to look at isFIBsurface
C. ifTumel IDvalue is not0x0,into the normalIPForwarding process
D. ifTunnel IDvalue is0x0test entryMPLSForwarding process
View answer
Correct Answer: AB
Question #5
The routing policy tools that can be used by BGP mainly include Filter-policy and Route- policy. Fiter-policy can only filter routes, and Route-policy can only modify routes.
A. Yes
B. wrong
View answer
Correct Answer: B
Question #6
BGP4+ carries the next hop address of the IPv6 route through the Next Hop attribute in the Update packet. (Moved into Attribute 14)
A. True
B. False
View answer
Correct Answer: B
Question #7
On the 05PFv3 network shown in the figure, each interface of R1 and R2 has two IPv6 addresses.Although the IPv6 address prefixes of R1 and R2 are different, they can still be used to establish anOSPFv3 neighbor relationship. If R2 is the DR, the Intra-Area-Prefix-LSA generated by R2 containsfour prefixes.
A. RUE
B. ALSE
View answer
Correct Answer: A
Question #8
An engineer uses two routers to test IPv6 services, and simulates the headquarters and branches by running BGP4+ of interconnection. As shown in the figure, an engineer captures packets to view the update packets sent by R1.About this message:Description of information, which of the following statements is correct
A. The next hop address of the route described in this packet is:2001:db8::2345:l
B. This message describes the current revocationIPv6routing
C. the route described in this packet may be throughimportbow
View answer
Correct Answer: C
Question #9
As shown in the figure, the message is forwarded based on MPLS in the network. When PE2 receives the message sent by P2, which of the following is the label value carried in the message?
A. ,1033
B. o label
C.
D. 033
View answer
Correct Answer: B
Question #10
On the OSPFv3 network shown in the figure:Area 1 is a stub areaArea 2 is a common areaArea 3 is an NSSAThe IPv6 address of Loopback0 on R6 is 2000::6/128.The router ID of each router is 10.0.X.X, where X is the router number.Which of the following statements are true?
A. The Inter-Area-Prefix-LSA that is generated by R1 and describes 2000::6/128 exists in Area 0
B. The Inter-Area-Prefix-LSA that is generated by R1 and describes 2000::6/128 exists in Area 3
C. The Inter-Area-Prefix-LSA that is generated by R2 and describes 2000::6/128 exists in Area 1
D. The Inter-Area-Prefix-LSA that is generated by R3 and describes 2000::6/128 exists in Area 2
View answer
Correct Answer: AD
Question #11
Which of the following statements about MUX VLANs are true?
A. eachGroup VLANmust bind aPrincipal VLAN
B. Separate VLANscan andMUX VLANall withinVLANcommunication
C. eachSeparate VLANsmust bind aPrincipal VLAN
D. Principal VLANcan andMUX VLAIall withinVLANcommunication
View answer
Correct Answer: ACD
Question #12
For the same MA, C address, manually configured MA, C entries have higher priority than automatically generated entries.
A. True
B. False
View answer
Correct Answer: A
Question #13
In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?
A. Intra-Area-Prefix-LSA
B. Link-LSA
C. Inter-Area-Router LSA
D. Inter-Area-Prefix-LSA
View answer
Correct Answer: C
Question #14
BGP4+ carries the next hop address of the IPv6 route through the Next Hop attribute in the Update packet. (Moved into Attribute 14)
A. True
B. False
View answer
Correct Answer: B
Question #15
Regarding the label space of MPLS, the description is wrong:
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
C. 16~1023is staticLSPand staticCR-LSPshared tab space
D. If the out tag value is0, The router will directly discard the packet
View answer
Correct Answer: D
Question #16
The figure shows the Router-LSA generated by a router. Which of the following statements are truebased on the LSA?
A. he router is an ASBR
B. t least one interface on the router belongs to area 0
C. he router is an ABR
D. t least one interface on the router belongs to a stub area
View answer
Correct Answer: BC
Question #17
Which of the following statements about LDP Label Retention - Free Way is true:
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
View answer
Correct Answer: AB
Question #18
An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. As shown in the figure, an engineer captures the packet to view the update message sent by R1.Regarding the description of the message information, which of the following statements is correct?
A. The next-hop address of the route described in this message is: 2001:db8::2345:1
B. The message describes the currently revoked IPv6 route
C. The routing address prefix and its prefix length described in this message are: 2001:db8:2345:1::1/128/
D. The route described in the message may be imported through import
View answer
Correct Answer: C
Question #19
BGP4+ carries the next hop address of the IPv6 route through the Next Hop attribute in the Update packet. (Moved into Attribute 14)
A. True
B. False
View answer
Correct Answer: B
Question #20
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #21
On the OSPFv3 network shown in the figure, OSPFv3 is enabled on the interfaces connecting R1, R2,and R3. The router ID of each router is 10.0.X.X, where X is the number of the router. If you checkdetailed information about an LSA on R3, the command output shows that the LSA is generated byR2 and describes the IPv6 prefix address associated with the Router-LSA.
A. RUE
B. ALSE
View answer
Correct Answer: A
Question #22
IS-/S supports multi-instance and multi-process, that is, one IS-S router. Multiple VPN instances can be configured with multiple IS-IS process associated. Are the following descriptions of IS-JS multi-instance and multi- process correct?
A. indivualIS-ISprocess can only be used with1indivualVPNinstance association
B. if oneIS-ISThe router creates multipleIS-ISProcess, each process does not affect each other, independent of each other
C. 1indivualIS-ISprocess can be associated with multiple differentVPNinstance association
D. 1indivualVPNInstances can be associated with multiple differentIS-ISprocess association
View answer
Correct Answer: ABD
Question #23
On the network shown in the figure, IS-IS runs on Rl, R2, R4, and R5, and the area ID is 49.0001. IS-IS runs on R3 and R6, and the area ID is 49.0002. In AS 65000, Ri, R3, R4, and R6 each establish IBGP peer relationships with R2 and R5. R2 and R5 are RRs, and Rl, R4, R3, and R6 are clients. The IBGP peer relationships are established using LoopbackO. The IP address of LoopbackO on each router is 10.0.X.X/32, and the router ID is 10.0.X.X, where X is the number of the router. Rl and R4 import the external route 192.168.1.0/24 to BGP through the import-route command, and R3 and R6 import the external route 192.168.2.0/24 to BGP through the import-route command. Which of the following statements are true?
A. For 192
B. For 192
C. For 192
D. For 192
View answer
Correct Answer: ABCD
Question #24
As shown in the figure, all routers run OSPF.Which of the following statements is correct?
A. 2 generates Router LSA in both area 1 and area 0
B. 2 forwards the Router LSA generated by R3 to R1
C. 2 forwards the Router LSA generated by R1 to R3
D. 2 only generates Router LSA in area 0
View answer
Correct Answer: A
Question #25
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #26
In order to advertise IPv6 routes in BGP4+, what fields are added in Update?
A. new path attribute: AP_UNREACH_NLRI
B. new path attribute: IPV6_REACH_NLRI
C. new path attribute: MP_REACH NLRI
D. new NLRI type, IPv6 NLR
View answer
Correct Answer: C
Question #27
An engineer uses two routers to test IPv6 services, and simulates the interconnection between the headquarters and branches by running BGP4+. As shown in the figure, an engineer captures the packet to view the update message sent by R1.Regarding the description of the message information, which of the following statements is correct?
A. he next-hop address of the route described in this message is: 2001:db8::2345:1
B. he message describes the currently revoked IPv6 route
C. he routing address prefix and its prefix length described in this message are: 2001:db8:2345:1::1/128/
D. he route described in the message may be imported through import
View answer
Correct Answer: C
Question #28
IS-/S supports multi-instance and multi-process, that is, one IS-S router. Multiple VPN instances can be configured with multiple IS-IS process associated. Are the following descriptions of IS-JS multi-instance and multi- process correct?
A. indivualIS-ISprocess can only be used with1indivualVPNinstance association
B. if oneIS-ISThe router creates multipleIS-ISProcess, each process does not affect each other, independent of each other
C. 1indivualIS-ISprocess can be associated with multiple differentVPNinstance association
D. 1indivualVPNInstances can be associated with multiple differentIS-ISprocess association
View answer
Correct Answer: ABD
Question #29
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #30
Advanced ACL defines rules based on information such as source IP address, destination IP address, IP protocol type, TCP source/destination port, UDP source/destination port number, etc.Using routing policies to call advanced ACL can achieve BGP routing control.
A. rue
B. alse
View answer
Correct Answer: B
Question #31
The routing policy tools that can be used by BGP mainly include Filter-policy and Route- policy. Fiter-policy can only filter routes, and Route-policy can only modify routes.
A. Yes
B. wrong
View answer
Correct Answer: B
Question #32
In the IS-IS network shown in the figure, the link cost value has been marked in the figure. R1 turns on IS-IS Auto FRR, then the main path for R1 to reach 10.0.3.3/32 is R1- R2-R3, and the backup path is R1-R4-R2-R3.
A. rue
B. alse
View answer
Correct Answer: B
Question #33
As shown in the figure, all routers run OSPF.Which of the following statements is correct?
A. R2 generates Router LSA in both area 1 and area 0
B. R2 forwards the Router LSA generated by R3 to R1
C. R2 forwards the Router LSA generated by R1 to R3
D. R2 only generates Router LSA in area 0
View answer
Correct Answer: A
Question #34
The routing policy tools that can be used by BGP mainly include Filter-policy and Route- policy. Fiter-policy can only filter routes, and Route-policy can only modify routes.
A. Yes
B. wrong
View answer
Correct Answer: B
Question #35
The routing policy tools that can be used by BGP mainly include Filter-policy and Route- policy. Fiter-policy can only filter routes, and Route-policy can only modify routes.
A. Yes
B. wrong
View answer
Correct Answer: B
Question #36
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #37
In order to ensure the reliable transmission of LDP messages, LDP's Discovery messages, Session messages, Advertisement messages and Notification messages all use TCP transmission.
A. rue
B. alse
View answer
Correct Answer: A
Question #38
As shown in the figure, OSPF is deployed in a campus, and Area 1 is deployed as an NSSA area. In the case of missing header, R2 will automatically generate a missing header route of Type 7 LSA and flood it in the NSSA area
A. True
B. False
View answer
Correct Answer: A
Question #39
According to this picture, we can judge that R4 is on?
A. default route
B. equal-cost default routes
C. default routes with different costs
D. equivalent default routes
View answer
Correct Answer: B
Question #40
CORRECT TEXTAs 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, R4LoopbacfkD 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?ArealQ10.1.1/32
A. 10
B. 10
C. 10
D. 10
View answer
Correct Answer: C
Question #41
aboutOSPFWhich of the following statements is false?
A. or a pair of additional 0hers on an Ethernet link, it is normal to stop clearing in the 2-72 state
B. talling in ExStart state may be a bad match between neighbor routers
C. tagnantINThe it state indicates that the router has received the neighbor'sHello message
D. he two router databases are synchronized, SPFAn error occurred in the calculation, it must be because of the RouterID repeated
View answer
Correct Answer: A
Question #42
In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes, R1which type ofLAS?
A. Intra-Area-Prefix-LSA
B. Link-LSA
C. Inter-Area-Router LSA
D. Inter-Area-Prefix-LSA
View answer
Correct Answer: C
Question #43
LDP messages are exchanged between LSR 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?
A. nnouncement message
B. iscovery news
C. onversational messages
D. abel Switched Messages
View answer
Correct Answer: D
Question #44
IS-/S supports multi-instance and multi-process, that is, one IS-S router. Multiple VPN instances can be configured with multiple IS-IS process associated. Are the following descriptions of IS-JS multi-instance and multi- process correct?
A. indivualIS-ISprocess can only be used with1indivualVPNinstance association
B. if oneIS-ISThe router creates multipleIS-ISProcess, each process does not affect each other, independent of each other
C. 1indivualIS-ISprocess can be associated with multiple differentVPNinstance association
D. 1indivualVPNInstances can be associated with multiple differentIS-ISprocess association
View answer
Correct Answer: ABD
Question #45
Which of the following operations is not part of the middle stage of dissection?
A. field defense
B. cutover implementation
C. Cutover preparation
D. business test
View answer
Correct Answer: D
Question #46
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #47
The default MPLS label publishing mode, label distribution control mode and label retentionmode of Huawei routers are respectively
A. Label release method - downstream autonomous methoD
B. Label release method - free methoD
C. Label release method - downstream autonomous methoD
D. Label release method-independent metho label distribution control method-free metho label retention method-downstream autonomy
View answer
Correct Answer: C
Question #48
The input information of a router is as follows. Which of the following causes the OSPF adjacency cannot be established normally?
A. Area code does not match
B. Inconsistent area type
C. interfaceIPInconsistent address masks
D. Hell
View answer
Correct Answer: AD
Question #49
Network administrator A wants to use AS-Path Filter to match the BGP routing attribute AS_PATH[100200300]. Network administrator A sorts out the four configurations in the figure. Which of the following configurations can meet the requirements of network administrator A?
A. way A
B. way D
C. WayC
D. way B
View answer
Correct Answer: AD
Question #50
Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest
A. display bgp routing-table address-family vpnv4
B. display bgp vpnv4 routing-table
C. display bgp routing-table ipv4-family vpnv4
D. display vpnv4 bgp routing-table
View answer
Correct Answer: B
Question #51
Regarding the IPSG, which of the following statement is incorrect?
A. IPSG can prevent IP address spoofing attacks
B. IPSG is a source IP address filtering technology based on the three-layer interface
C. IPSG can turn on the IP packet inspection and alarm function, and cooperate with the network management to perform alarms
D. IPSG can prevent the host from changing the IP address privately
View answer
Correct Answer: B
Question #52
I-SPF and PRC can speed up ISIS route convergence. PRC does not calculate nodes. Instead, it updates routes based on the shortest path tree (SPT) calculated using the SPF algorithm.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #53
Two routers run IS-IS Level-1-2. Router R1 belongs to Area 49.0001 and Router R2 belongs to Area 49.0002. They establish adjacency successfully. Which adjacency type is formed?
A. evel-2 adjacency only
B. evel-1-2 adjacency
C. o adjacency formed
D. evel-1 adjacency only
View answer
Correct Answer: A
Question #54
You have set IS-IS IPv6 enable under the interface, what is the meaning of this command?
A. Activate on the interfaceIPv6 IS-ISprocess1
B. Activate on the interfaceIPv6 IS-ISprocess3
C. activate on the interfaceIPv6 IS-ISprocess10
D. activate on the interfaceIPv6 IS-ISprocess2
View answer
Correct Answer: A
Question #55
In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?
A. Intra-Area-Prefix-LSA
B. Link-LSA
C. Inter-Area-Router LSA
D. Inter-Area-Prefix-LSA
View answer
Correct Answer: C
Question #56
As shown in the figure, a certain park has deployed IPv6 for service testing, and there are 4 routers in the network. Run OSPFv3 to realize network interconnection.Regarding the LSA generated by the OSPFv3 network, which of the following statements is wrong?
A. R1 itself will generate Router-LSA to describe device interface information, and will receive Router-LSA generated by R2 and R3 at the same time
B. There is a Network LSA generated by R3 in the LSDB of R1, indicating that R3 may be the DR of this link
C. R1 will receive the two Link-LSAs generated by R2, describing the two links information connected to The safer, easier way to help you pass any IT exams
D. As an ABR, R2 will generate Inter-Area-Prefix-LSA describing the IPv6 address prefix of Area 1, and advertise it to R1 and R3
View answer
Correct Answer: C
Question #57
IS-/S supports multi-instance and multi-process, that is, one IS-S router. Multiple VPN instances can be configured with multiple IS-IS process associated. Are the following descriptions of IS-JS multi-instance and multi- process correct?
A. indivualIS-ISprocess can only be used with1indivualVPNinstance association
B. if oneIS-ISThe router creates multipleIS-ISProcess, each process does not affect each other, independent of each other
C. 1indivualIS-ISprocess can be associated with multiple differentVPNinstance association
D. 1indivualVPNInstances can be associated with multiple differentIS-ISprocess association
View answer
Correct Answer: ABD

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