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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Advanced Ethernet Technologies | 10% | - VLANs - Ethernet security |
| Topic 2: Network O&M | 7% | - Data collection - Routine maintenance |
| Topic 3: Advanced BGP Features | 10% | - Advanced BGP features - BGP route control - Route reflectors - Inter-domain routing optimization |
| Topic 4: Network Cutover | 7% | - Basic cutover concepts - Migration process |
| Topic 5: IPv6 Routing | 20% | - BGP4+ - OSPFv3 - IS-IS for IPv6 - IPv6 static routes |
| Topic 6: Advanced IGP Features | 17% | - Fast convergence - Route control - OSPF advanced features - IS-IS advanced features |
| Topic 7: Network Troubleshooting | 10% | - Troubleshooting methods - Structured troubleshooting processes |
| Topic 8: MPLS Technologies | 19% | - MPLS forwarding - MPLS VPN applications - MPLS principles - MPLS configuration |
>> H12-831_V1.0 Zertifizierungsantworten <<
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104. Frage
The router ID of R1 is 10.0.1.1. The LSA shown in the figure is displayed in the LSDB of R1. Which of the following statements is false about the LSA?
Antwort: C
Begründung:
OSPFv3 Router-LSAs describe router capabilities, connected links, interface identifiers, neighboring router identifiers, and routing metrics.
The displayed LSA has an originating router ID of 10.0.4.4, while R1 ' s router ID is 10.0.1.1. Therefore, the LSA was not generated by R1.
The Router-LSA contains two transit-network link descriptions, indicating at least two OSPFv3-enabled interfaces.
Its flags show that the originating router is not currently identified as an ASBR.
However, the Router-LSA does not establish that the originating router never generates Network-LSAs.
Network-LSAs are originated by Designated Routers (DRs) on applicable multiaccess networks.
Determining whether this router originates a Network-LSA requires additional information about DR election and the relevant network interfaces.
Therefore, statement D is false because the Router-LSA alone does not justify that conclusion.
HCIP-Datacom-Advanced Routing & Switching Technology V1.0 Training Material.pdf
105. Frage
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.
* When checking 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 Network-LSA.
Based on this information, which of the following statements is correct?
Antwort: B
Begründung:
Comprehensive and Detailed In-Depth Explanation:
To verify the correct answer, let ' s analyze the LSA types in OSPFv3 and how they work in the given topology.
1. Understanding OSPFv3 LSAs in the Figure
From the command output shown in the image:
* LS Type: Intra-Area-Prefix-LSA (Type 9 in OSPFv3).
* Originating Router: 10.0.2.2 (R2).
* Referenced LS Type: 0x2002, which corresponds to a Network-LSA (Type 2).
* Prefix Advertised: 2000:23::/64, which is an IPv6 prefix associated with a network segment.
2. What is an Intra-Area-Prefix LSA (Type 9) in OSPFv3?
* In OSPFv3, Type 9 LSAs (Intra-Area-Prefix LSAs) describe IPv6 prefixes associated with either Router-LSAs (Type 1) or Network-LSAs (Type 2).
* In multi-access networks (e.g., Ethernet), the DR (Designated Router) generates a Network-LSA (Type
2), which represents the shared network segment.
* R2 is likely the DR in this topology, meaning it generates a Network-LSA (Type 2) and an associated Intra-Area-Prefix LSA (Type 9) for the subnet.
3. Analyzing Why the Statement is TRUE
* R2 (10.0.2.2) is the originator of the Intra-Area-Prefix LSA (Type 9).
* The LSA references a Network-LSA (Type 2), confirming that R2 is the DR for the subnet.
* This means the LSA is correctly describing the IPv6 prefix associated with the network.
* Since the LSA is visible in R3 ' s LSDB, R3 is learning this information from R2.
* All these points confirm that the statement is TRUE.
106. Frage
Which of the following operations may affect the normal operation of the customer network? (Multiple choice)
Antwort: A,B,D
107. Frage
On the network shown in the figure, the DHCP server function is enabled on GE0/0/0 of R2 , and the address pool is an interface address pool .
When GE0/0/0 and GE0/0/1 of R1 function as DHCP clients , only one interface can obtain an IP address by default .
Options:
Antwort: B
Begründung:
Comprehensive and Detailed In-Depth Explanation:
Understanding the DHCP Process in This Scenario:
* DHCP Server on R2:
* The DHCP server is configured on interface GE0/0/0 of R2 .
* The address pool is an interface address pool , meaning that IP addresses are allocated from the subnet of GE0/0/0 (i.e., 10.0.12.0/24 ).
* DHCP Clients on R1:
* Both interfaces (GE0/0/0 and GE0/0/1) on R1 are set as DHCP clients , meaning they will send DHCP DISCOVER messages to obtain an IP address dynamically .
* Why Only One Interface Gets an IP Address?
* Interface address pools in Huawei devices assign only one IP address per MAC address (which is typically the router's MAC).
* Since both interfaces belong to R1 , they share the same MAC address when making a DHCP request.
* As a result, the DHCP server on R2 only assigns one IP address to the first requesting interface .
* The second request is ignored or denied by the DHCP server due to the duplicate MAC address issue .
Key Takeaways:
* Huawei routers using an interface-based DHCP address pool assign only one IP per MAC address.
* Since both interfaces on R1 have the same MAC, only one gets an IP.
* This behavior is expected in Huawei's HCIP-Datacom-certified DHCP configurations.
HCIP-Datacom-Advanced Routing & Switching Technology References:
* Huawei HCIP-Datacom Official Certification Guide , Chapter on DHCP Server and Client Configurations .
* Huawei Datacom Configuration Guide , Section on Interface Address Pools and Address Assignment Limitations .
* Huawei Enterprise Networking Training Materials , DHCP Relay and DHCP Server Behavior.
108. Frage
As shown in the figure, 0SPF is enabled on all interfaces of the router. The cost value of the link is marked in the figure, R2's LoogbackO is advertised by mouth in area 0, then in In area 1, both R2 and R3 transmit the routing information of 10.0.2.2/32 in the form of Typae3 LSA.
Antwort: B
109. Frage
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