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  1. Home
  2. Huawei Certification
  3. H12-891_V1.0 Exam
  4. Huawei.H12-891_V1.0.v2026-06-05.q295 Dumps
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Question 76

OSPFv3 uses the same route advertisement method as OSPFv2: advertising is done through the network command in the OSPFv3 area view.

Correct Answer: A
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Question 77

In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following BGP EVPN routes is used to advertise MAC addresses, ARP entries, and IRB routes?

Correct Answer: C
Comprehensive and Detailed In-Depth Explanation:
In BGP EVPN,Type 2routes (MAC/IP Advertisement routes) are used to advertise:
MAC addressesof endpoints.
ARP entries(MAC-to-IP bindings).
IRB (Integrated Routing and Bridging) routes, allowing the advertisement of both Layer 2 and Layer 3 reachability.
These routes are essential for enabling dynamic VXLAN tunnel establishment and seamless host mobility.
Type 1 (Ethernet Auto-Discovery):Used for multi-homing information.
Type 3 (Inclusive Multicast Ethernet Tag):Used for BUM (Broadcast, Unknown unicast, and Multicast) traffic.
Type 4 (Ethernet Segment):Used for identifying Ethernet segments in multi-homing scenarios.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei VXLAN Configuration Guide
RFC 7432: BGP MPLS-Based Ethernet VPN
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Question 78

The switch role in the stacking system does not include ?

Correct Answer: A
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Question 79

In a scenario whereSR Policiesare dynamically established through thecontroller, which of the following statements about theSR Policy solution architectureis incorrect?

Correct Answer: C
Comprehensive and Detailed Explanation:
#SR Policies are dynamically computed and delivered by the SDN controllerin an SR-MPLS or SRv6 network.
#Correct Statements:
#(A)NETCONFis used fordelivering configurationslikerouting policies and service interfaces.
#(B)BGP-LS (Link-State)is used tocollect topologyandcompute SR Policies.
#(D)BGP IPv6 SR Policydistributes SR policy attributes likecolor, headend, and endpoints.
#Why Is (C) Incorrect?
#(C) The controller does not use telemetry to deliver SID entries-telemetry is used forreal-time monitoring, not path computation.
#Reference:Huawei HCIE Datacom - SR Policy and Controller-Based Path Computation
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Question 80

Which of the following link types may appear in OSPF Router-LSAs?

Correct Answer: B,C,D
OSPF (Open Shortest Path First) Router-LSA (Type 1 LSA) describes all directly connected OSPF links of a router and their types. The following link types can appear in a Router-LSA:
* Point-to-Point (P-2-P) (B) - Represents a direct connection between two routers.
* Virtual Link (Vlink) (C) - Used to connect an area to the backbone (Area 0) when a direct connection is unavailable.
* Stub Network (StubNet) (D) - Represents a network with only one exit point (e.g., a loopback interface or passive interface).
Incorrect Option:
TransNet (A) - Incorrect!
* Transit networks appear in Network LSAs (Type 2), not Router LSAs.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei OSPF Configuration Guide - Router-LSAs and Link Types
* HCIE-Datacom Training Material - OSPF LSAs and Topology Advertisement
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