Free Huawei H12-831 Practice Questions & Answers 2026 Part2

When 0SPFV2 evolves to 0SPFV3, the LSA format and function are exactly the same, but the network layer in the LSA address from IPv4 to IPv6o

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes, R1which type ofLAS?

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest

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

In an MPLS network, data is forwarded based on information such as FIB, MILFE, and ILM.Among these informations, which of the following options is mainly used for information association?

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes, R1which type ofLAS?

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?

On an enterprise network shown in the figure, EBGP is deployed between CEs and PEs.CE1 sends a VPN route to PE1.Which of the following statements are false?Options:

On the network shown in the figure, IS-IS runs on R1, 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. The import-route isis level-2 into level-1 command is configured on R2. In AS 65000, R1, R3, R4, and R6 each establish iBGP peer relationships with R2 and R5. R2 and R5 are Route Reflectors (RRs), and R1, R4, R3, and R6 are clients. An iBGP peer relationship is established between R2 and R5, and the same cluster ID is configured. The iBGP peer relationships are established using Loopback0. The IP address of Loopback0 on each router is 10.0.X.X/32, where X is the router number. R1 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? Comprehensive and Detailed In-Depth Understanding the BGP and IS-IS Network Topology in the Questio n : IS-IS Areas: Area 49.0001 (Level-1 IS-IS): R1, R2, R4, R5. Area 49.0002 (Level-2 IS-IS): R3, R6. R2 acts as an ABR (Area Border Router) and redistributes routes between Level-1 and Level-2 using import-route isis level-2 into level-1. BGP Route Reflection & Peering: R2 and R5 are Route Reflectors (RRs). iBGP peering is established among all routers (R1, R2, R3, R4, R5, R6). R1 and R4 import 192.168.1.0/24 into BGP, meaning this prefix will be advertised to all iBGP peers. R3 and R6 import 192.168.2.0/24 into BGP, meaning this prefix will also be advertised to all iBGP peers. Route Distribution Analysis: Route to 192.168.1.0/24 (Imported by R1 & R4): R1 and R4 advertise 192.168.1.0/24 into iBGP. Since R2 and R5 are Route Reflectors (RRs), they will reflect these routes to all their iBGP clients (R1, R3, R4, R6). R2 learns two valid routes to 192.168.1.0/24 (from R1 and R4). R5, as another RR, learns both routes and advertises them as well. R2 ultimately has three valid paths (direct from R1 and R4, plus a reflected route from R5). Statement C is correct: The BGP routing table of R2 contains three valid routes to 192.168.1.0/24. R5 also learns 192.168.1.0/24 from both R1 and R4. Statement B is correct: The BGP routing table of R5 contains two valid routes to 192.168.1.0/24 (from R1 and R4). Route to 192.168.2.0/24 (Imported by R3 & R6): R3 and R6 import 192.168.2.0/24 into BGP. R2 and R5 (Route Reflectors) learn this route and reflect it to their clients (R1, R3, R4, R6). R4 receives three valid paths (directly from R3 and R6 via BGP, and one additional reflected path via R5). Statement D is correct: The BGP routing table of R4 contains three valid routes to 192.168.2.0/24. Checking Statement A: R3 originally imports 192.168.2.0/24 and advertises it. Since it is a Route Reflector Client of R5 and R2, it should have multiple routes via iBGP, not just one. Statement A is incorrect because R3 should have multiple valid routes, not just one. Final Conclusion: B. The BGP routing table of R5 contains two valid routes to 192.168.1.0/24. C. The BGP routing table of R2 contains three valid routes to 192.168.1.0/24. D. The BGP routing table of R4 contains three valid routes to 192.168.2.0/24. A. The BGP routing table of R3 does NOT contain only one valid route to 192.168.2.0/24 (it has multiple routes). Thus, the correct answers are: B, C, D. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 -- BGP Route Reflection and iBGP Route Distribution Huawei Official HCIP-Datacom Study Guide -- IS-IS Route Redistribution into BGP Huawei Documentation on BGP Route Reflectors and Import-Route Behavior

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

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

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes, R1which type ofLAS?

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.

On a broadcast network, routers (including non-DIS routers) of the same level on a network segment can establish neighbor relationships. In the implementation of BFD for IS-IS, however, BFD sessions are established only between a DIS and non-DIS routers, not between non-DIS routers.

On the OSPFv3 network shown in the figure, area 1 is a stub area, area 2 is a common area, and area3 is an NSS

As shown in the figure, all interfaces of the router enable DSPF. The cost value of the link is marked in the figure. R2The LoopbackD interface is advertised in area 1, then the cost of R1 reaching 10.2/32 is?

What is the Router-ID of OSPFv3?

In the BGP/MPLS IP VPN network shown in the figure, the administrator uses Hub- spoke networking to implement centralized control of VPN traffic at the Hub site. Which of the following RT value plans for each device is correct?

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest

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?

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

OSPF neighbors periodically send Hello messages to establish and maintain adjacency, and the interval of the Hello timer must be consistent, otherwise the adjacency cannot be established. In order to accelerate OSPF convergence, network engineers can set the interval of the Hello message to 1ms.

According to this picture, the door can be judged?

A network engineer outputs the following information when troubleshooting OSPF. Based on this, determine which reason causes the adjacency relationship to fail to be established normally?

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes, R1which type ofLAS?

Which statement about DHCP Snooping is wrong?

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?

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes, R1which type ofLAS?

In OSPF, ABR will convert all Type 7 LSAs in the NSSA area into Type 5 LSAs.

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

On the OSPFv3 network shown in the figure, area 1 is a common area. Which of the following statements are true?

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

A network engineer outputs the following information when troubleshooting OSPF. Based on this, determine which reason causes the adjacency relationship to fail to be established normally?

In OSPF, ABR will convert all Type 7 LSAs in the NSSA area into Type 5 LSAs.

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest

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.

If you want to check the files under Flash, which command should you use?

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

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

As shown in the figure, OSPF is enabled on all interfaces of the router. Which of the following statements is correct?

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?

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

If you want to check the files under Flash, which command should you use?

R1 and R2 use directly connected interfaces to establish an EBGP peer relationship. R1 imports 2000::1/128 to BGR By default, which of the following is the next hop of the route from R2 to 2000:: 1/128?

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest

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

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.

Which of the following sequences can be matched by the regular expression 100.S

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

As shown in the figure, the network has a loop because STP is not enabled. Which of the following phenomena may be bowed?

Link LSAs of OSPFv3 are propagated throughout the area.

Which of the following statements about the MP_REA, CH_NLRI attribute of BGP4+ is correct?

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.

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

What types of Link Types are included in the Router LSA in OSPF?

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.

According to this diagram, can we break the

Which of the following are not included in the security protection actions that a secure MAC address can perform?

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?

On the OSPFv3 network shown in the figure, area 1 is a stub area. Which of the following statements are true?

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?

Which of the following operations is not part of the middle stage of dissection?

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?

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?

When MPLS is deployed in the network and the network layer protocol is IP, the route corresponding to the FEC must exist in the IP routing table of the LSR, otherwise the label forwarding entry of the FEC will not take effect.

Which of the following statements about MUX VLANs are true?

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

For the same MA, C address, manually configured MA, C entries have higher priority than automatically generated entries.

A router is running OSPF, and the output information is as shown in the figure. Which of the following statements is correct?

A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFV3.Interconnection of IPv6 networks. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of them Link-LSAs.Which of the following statements is true about the description of this LSA?

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 areAfter the entries arrive at the BP router in order, by default, BGP will finally call a routeentry?

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.

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

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

On an MPLS network, when a transit device receives an MPLS packet and is ready to swap labels, it finds that the label value after swapping is 0.In this case, which of the following operations will the device perform?

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

Which of the following statements about IPSG is false?

Network engineers found that the multicast client could not receive multicast data correctly, so they suspected that the group address set by the multicast server was wrong. Which of the following cannot be the group address?

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.

Which of the following commands can be used to view information about BGP VPNv4 routes and BGP private network routes on PEsinterest

In the topology shown in the figure, the entire network runsOSPFv3agreement inNoIn the case of attracting external routes,R1which type ofLAS?

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

Regarding BGP/MPLS IPVPN routing interaction, which of the following descriptions is wrong?

Refer to the exhibit. On the OSPF network shown in the figure, the cost values of links are marked. OSPF IP FRR is enabled on R1, and the maximum load-balancing 8 command is configured in the OSPF process. Which of the following is the cost value of the route 10.0.35.0/24 in the routing table of R1? Comprehensive and Detailed In-Depth To determine the cost value of the route 10.0.35.0/24 in the routing table of R1, let's analyze the possible shortest paths from R1 to R3 (which owns the 10.0.35.0/24 network) based on the given OSPF link costs: Path 1: R1 R2 R3 R1 to R2: Cost = 20 R2 to R3: Cost = 10 Total Cost = 20 + 10 = 30 Path 2: R1 R4 R3 R1 to R4: Cost = 10 R4 to R3: Cost = 10 Total Cost = 10 + 10 = 20 (Lowest cost path) Path 3: R1 R5 R3 R1 to R5: Cost = 10 R5 to R3: Cost = 10 Total Cost = 10 + 10 = 20 (Equal-cost path) Final Calculation: The two best equal-cost paths (R1 R4 R3 and R1 R5 R3) have a cost of 20. Since OSPF supports equal-cost multi-path (ECMP) routing and maximum load-balancing 8 is enabled, OSPF will install both routes into the routing table with the same cost of 20. The path R1 R2 R3 has a higher cost (30) and will not be chosen. Final Answer: 20 (Option C) HCIP-Datacom-Advanced Routing & Switching Technology V1.0 -- OSPF Route Calculation & Load Balancing OSPF Equal-Cost Multi-Path (ECMP) and Route Selection OSPF Fast Reroute (FRR) Mechanism

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

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.

On an MPLS network, an LSR ID uniquely identifies an LSR. An LSR ID defaults to the IP address of a physical interface on a device and can be manually set to a loopback interface address.Options:

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

Which of the following statements about VLAN aggregation is true?

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?

On the OSPFv3 network shown in the figure, area 1 is a common are a. Which of the following statements are true?

Regarding BGP/MPLS IPVPN routing interaction, which of the following descriptions is wrong?

A campus has deployed IPv6 for service testing. There are 4 routers in the network, running 0SPFV3.Interconnection of IPv6 networks. As shown in the figure, an engineer checked the LSDB of R2 and intercepted one of them Link-LSAs.Which of the following statements is true about the description of this LSA?

On the network shown in the figure, EBGP peer relationships are established between neighboring routers through directly connected interfaces. The router ID of each router is 10.0.X.X, and the AS number is 6500X, where X is the number of the router. Both Rl and R4 have static routes to 192.168.1.0/24, which are imported to BGP through the import-route command. R3 is configured with the peer y.y.y.y as-path-filter 1 import command for all peers. Which of the following sets of commands enables R3 to select the route with the longest AS_Path to 192.168.1.0/24?

When traffic accesses the backbone network, VPN isolation is required. At this time, the interface configuration of a PE router is as shown in the figure. If the administrator needs to bind the interface to VPN1 and the interface IP address remains unchanged, which of the following descriptions of the administrator's operation is correct? interface GigabitEthernet 0/0/1 ip address 192168.100.2 24

If the goods counted are inconsistent with the quantity on the packing list, you can unpack and inspect the goods before contacting the manufacturer for processing.

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.

BFD for OSPF refers to the association of BFD with OSPF to speed up OSPF's response to network topology changes. The OSPF neighbor relationship can enter the Full state only after the BFD session goes up. The OSPF neighbor relationship can go down only after the BFD session goes down.