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Huawei H12-831_V1.0-ENU certification exam is a 90-minute, computer-based exam consisting of 60 multiple-choice questions. H12-831_V1.0-ENU exam is available in English and Chinese languages and can be taken at any authorized Huawei testing center. H12-831_V1.0-ENU Exam Fees vary depending on the region and country, but typically range between $150 and $300.
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Huawei H12-831_V1.0 exam is designed to test the candidate's knowledge of advanced routing and switching technologies in areas such as network design, implementation, management, and troubleshooting. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 certification validates the candidate's ability to design, configure, and troubleshoot complex network infrastructures using Huawei's advanced routing and switching technologies.
NEW QUESTION # 223
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 check detailed information about an LSA on R3, the command output shows that the LSA is generated by R2 and describes the IPv6 prefix address associated with the Router-LSA.
Is this statement TRUE or FALSE?
Answer: B
NEW QUESTION # 224
If an OSPF router is set as a stub router, which of the following is the link metric in the LSA sent by the router?
Answer: C
NEW QUESTION # 225
The figure shows the LSP information of R1 and R2 on an MPLS network. An administrator runs the ping
3.3.3.3 command on R1. Given this, which of the following statements is true?
Answer: D
Explanation:
The display mpls lsp output on R1 contains the following entry for FEC 3.3.3.3/32:
In/Out Label: NULL/1025
Out Interface: GE0/0/1
NULL/1025 means R1 is the ingress LSR for this LSP. The packet initially has no label, so R1 performs a push operation and sends it toward R2 with label 1025.
R2's corresponding entry is:
In/Out Label: 1025/3
Out Interface: GE0/0/1
Label value 3 is the MPLS implicit-null label. It is not placed in the outgoing packet. Instead, it instructs the penultimate-hop router-R2-to remove label 1025. This operation is called penultimate-hop popping (PHP).
R2 consequently sends an unlabeled IPv4 packet to egress router R3, which processes the packet using normal IP forwarding.
Therefore, the packet sent from R1 carries label 1025, and R2 removes the label before forwarding it toward R3. Huawei MPLS label operations and PHP
NEW QUESTION # 226
A network device has established an OSPF neighbor relationship with another device. The figure shows the configuration of GE0/0/0 on the network device.
Which of the following commands would NOT affect the OSPF neighbor status of the interface?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
To determine the correct answer, we need to analyze how each command impacts OSPF neighbor relationships.
1. Understanding OSPF Neighbor Formation
OSPF routers form neighbor relationships when they meet the following conditions:
* They are in the same subnet (IP addresses and subnet masks must match).
* They are in the same OSPF area.
* They use the same network type (e.g., Broadcast, Point-to-Point).
* Authentication (if configured) must match.
* Hello and Dead timers must match.
2. Analyzing Each Answer Option
# A. " undo ip address 10.0.12.2 24 " # Affects OSPF Neighbor Status
* Removing the IP address will prevent the interface from sending and receiving OSPF Hello packets.
* Without an IP address, OSPF cannot establish neighbor relationships.
* Effect: Breaks OSPF neighbor status.
# B. " undo description " # Does NOT Affect OSPF Neighbor Status
* The interface description is just a label for administrators and has no impact on OSPF functionality.
* It does not affect neighbor relationships, routing, or communication.
* Effect: No impact on OSPF neighbors.
# C. " undo ospf cost " # Affects OSPF Neighbor Status Indirectly
* OSPF cost determines the path selection but does NOT break the neighbor relationship.
* However, if the cost change leads to routing table recalculations, it might cause temporary convergence issues.
* Effect: Does not directly break neighbor status, but affects route selection.
# D. " undo ospf dr-priority " # Affects OSPF Neighbor Status (Possibly Causes DR Re-Election)
* OSPF DR/BDR election uses priority values.
* If changed, a new election might occur, leading to a temporary loss of neighbor relationships.
* Effect: Might cause OSPF neighbor reset (temporary impact on adjacency).
NEW QUESTION # 227
On the OSPF network shown in the figure, area 1 is an NSSA, area 2 is a common area, and R4 imports an external route 10.0.4.4/32. The router ID of each router is 10.0.X.X, where X is the router number. If the asbr- summary 10.0.4.0 255.255.255.0 command is run in the OSPF processes of R1 and R3, which of the following routers have the route 10.0.4.0/24 in their routing tables?
Answer: A,B
Explanation:
Step 1: Understanding OSPF Areas and Summarization
* Area 1 (NSSA - Not So Stubby Area)
* Allows external routes but converts Type-5 LSAs into Type-7 LSAs.
* External routes must be translated by an ABR into Type-5 LSAs before being propagated into other areas.
* Area 2 (Common Area - Regular OSPF Area)
* Supports both inter-area and external routes.
* asbr-summary 10.0.4.0 255.255.255.0 Command
* This command summarizes all external routes within 10.0.4.0/24 into a single summarized route.
* Since it is applied on R1 and R3, these routers will advertise 10.0.4.0/24 instead of 10.0.4.4/32 to their respective areas.
Step 2: Route Distribution Analysis
* R4 (Originating Router in NSSA - Area 1)
* R4 injects 10.0.4.4/32 as a Type-7 LSA into Area 1.
* R1 (ABR between Area 1 & Area 0, Summarizing Route)
* Since R1 is an ABR, it translates Type-7 LSAs from Area 1 into a summarized Type-5 LSA (10.0.4.0/24) for Area 0.
* # R1 has 10.0.4.0/24 in its routing table.
* R2 (Inside Backbone Area 0, No ASBR Summary Applied Here)
* R2 only receives Type-5 LSAs from R1 but does not summarize them.
* Since R2 is not explicitly summarizing, it will likely still see 10.0.4.4/32 rather than 10.0.4.0/24.
* # R2 does not have 10.0.4.0/24.
* R3 (ABR between Area 0 & Area 2, Summarizing Route)
* R3 is also an ABR and has the asbr-summary 10.0.4.0/24 command configured.
* It will advertise the summarized route 10.0.4.0/24 into Area 2.
* # R3 has 10.0.4.0/24 in its routing table.
* R5 (Inside Area 2, No Direct Connectivity to External Routes)
* Since R3 summarizes 10.0.4.0/24, R5 (inside Area 2) will receive only summarized routes.
* # R5 has 10.0.4.0/24.
Final Answer: # R1, R3 (Option A, C)
References:
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 - OSPF Route Summarization OSPF NSSA and Type-7 to Type-5 LSA Translation
NEW QUESTION # 228
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