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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Objectives
Topic 1: Data Center and Virtualization Technologies	- VXLAN and overlay networks 1. Data center network virtualization
Topic 2: Routing and Switching Technologies	- Switching technologies 1. Ethernet switching mechanisms 2. VLAN and STP - IP routing protocols 1. OSPF 2. BGP 3. IS-IS basics
Topic 3: Network Automation and Programmability	- SDN and automation 1. NETCONF/YANG basics 2. Network automation tools
Topic 4: Network Security and QoS	- QoS mechanisms 1. Traffic classification and shaping - Security mechanisms 1. Basic network security design 2. ACL and traffic control
Topic 5: Enterprise Network Architecture	- Network design principles 1. Hierarchical network architecture 2. Scalability and high availability design
Topic 6: WAN and VPN Technologies	- MPLS fundamentals 1. VPN technologies 2. MPLS LDP and forwarding
Topic 7: IPv6 and Advanced IP Technologies	- IPv6 deployment 1. IPv6 addressing and transition

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Huawei HCIE-Datacom V1.0 Sample Questions (Q90-Q95):

NEW QUESTION # 90
The following is the correct statement about the LSA of OSPFv3?

A. When the Intra-AreaPrefixLSA's ReferencedLinkStateType-2, referencedLinkStatelD contains the interface to DR ID
B. Inter-AreaPrefirLSA also contains LinkLocal information file
C. Router-LSA and Network-LSA does not contain routing information
D. Inter-AreaPrefix-SA's LinkStatelD contains the prefix

Answer: A,C

NEW QUESTION # 91
In 6PE networking, the shared explicit null label function can be enabled on routers to reduce the number of required MPLS labels. With this function, a router assigns a label with the value (enter only digits) to all 6PE routes.
0In 6PE (IPv6 over MPLS for Provider Edge), the shared explicit null label value is 0. When this function is enabled, the PE router assigns label 0 (IPv4 Explicit Null) to all IPv6 routes, reducing the label space consumption. This is known as label 0 reuse for IPv6 forwarding over MPLS.Exact Extract - HCIE-Datacom IPv6/MPLS Integration Section:"To optimize label usage in 6PE deployments, shared explicit null label (label 0) can be assigned to all 6PE routes."

Answer:

Explanation:
InPEIPvoverMPLSforProviderEdge
Explanation:
Huawei HCIE-Datacom Guide - IPv6 over MPLS (6PE and 6VPE)
Huawei Training Manual - MPLS IPv6 Label Assignment

NEW QUESTION # 92
The following statement about the OSPFv3 message format is correct?( Multiple select).

A. The OSPF version number changed from 2 to 3
B. There is no change in the option field of the Hello message
C. Hello messages no longer contain address information, carrying Interface lD
D. Remove the Authentication, Auth Type fields

Answer: A,C,D

NEW QUESTION # 93
BGP Link State (BGP-LS) introduces a new NLRI into BGP. The NLRI carries link, node, topology prefix, and other information, and is also referred to as the link state NLRI.

A. TRUE
B. FALSE

Answer: A

Explanation:
Understanding BGP Link State (BGP-LS)
🔹 What is BGP-LS?
BGP-LS (BGP Link-State) is an extension of BGP that allows routers to exchange network topology information via Link-State NLRI.
Helps SDN controllers and path computation elements (PCEs) make intelligent routing decisions.
🔹 What Does BGP-LS Advertise?
✅ Node Information - Router IDs, Loopbacks
✅ Link Information - Bandwidth, Delay, Cost
✅ Prefix Information - Network Subnets
✅ Topology Information - Full network graph
Why is the Answer TRUE?
✅ BGP-LS introduces a new NLRI format for advertising link-state information.
✅ NLRI (Network Layer Reachability Information) is used to distribute topology data to SDN controllers.
✅ It improves path optimization by enabling centralized traffic engineering decisions.
Real-World Application:
SDN-Based Traffic Engineering: Used in Segment Routing (SR) networks for centralized path selection.
MPLS TE (Traffic Engineering): Optimizes network paths dynamically based on real-time link-state data.
✅ Reference: Huawei HCIE-Datacom Guide - BGP Link-State (BGP-LS) Fundamentals

NEW QUESTION # 94
In Huawei Open Programmability System (OPS), /ifm/interfaces/interface is the URL used to identify a device's managed object.

A. TRUE
B. FALSE

Answer: A

Explanation:
Comprehensive and Detailed Explanation:
# Huawei OPS (Open Programmability System) is a YANG-based network management system that uses RESTful APIs for configuring and managing devices.
# /ifm/interfaces/interface is the RESTful URI (Uniform Resource Identifier) that:
* Represents an interface object in the network device.
* Allows querying, configuring, and modifying network interfaces via API requests.
Since the statement is correct, the answer is TRUE.
# Reference: Huawei HCIE Datacom - OPS API and Managed Objects

NEW QUESTION # 95
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