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Huawei H12-891_V1.0 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Network Automation17%- iMaster NCE
  • 1. Intent-Driven Networking
- Automation Technologies
  • 1. Ansible
  • 2. Python Scripting
  • 3. RESTful API
  • 4. NETCONF/YANG
- NCE (Network Cloud Engine)
  • 1. Deployment
  • 2. Architecture
Topic 2: Bearer WAN Planning and Deployment15%- SR (Segment Routing)
  • 1. SR-MPLS
  • 2. SRv6
- VPN Services
  • 1. EVPN
  • 2. L3VPN
- Traffic Engineering
  • 1. Flex-Algo
  • 2. SR-TE
  • 3. RSVP-TE
Topic 3: Campus Network Planning and Deployment23%- Campus Network Architecture
  • 1. Hierarchical Design
  • 2. Spine-Leaf Architecture
- Network Services
  • 1. Network Security
  • 2. QoS
  • 3. WLAN
- Overlay Network (VXLAN)
  • 1. VXLAN Gateway
  • 2. BGP EVPN
- Underlay Network
  • 1. IP Address Planning
  • 2. Physical Layer Design
Topic 4: Advanced Routing and Switching Technology37%- MPLS
  • 1. MPLS VPN
  • 2. LDP
  • 3. MPLS TE
  • 4. Configurations
  • 5. Basic Concepts
- BGP
  • 1. Path Selection
  • 2. Route Aggregation
  • 3. Basic Concepts
  • 4. Routing Policies
  • 5. Configurations and Troubleshooting
- OSPF
  • 1. Route Calculation
  • 2. LSA Types
  • 3. Basic Concepts
  • 4. Area Types
  • 5. Configurations and Troubleshooting
- Ethernet Switching
  • 1. VXLAN
  • 2. Stack & CSS
  • 3. STP/RSTP/MSTP
  • 4. VLAN
- Route Control
  • 1. Route Filtering
  • 2. IP Prefix List
  • 3. Route-policy
  • 4. ACL
- IS-IS
  • 1. Network Types
  • 2. Route Leaking
  • 3. Basic Concepts
  • 4. Addressing
  • 5. Configurations and Troubleshooting
Topic 5: WAN Interconnection Network Planning and Deployment8%- MPLS VPN
  • 1. Full-Mesh
  • 2. Hub-Spoke
- Inter-AS VPN
  • 1. Option B
  • 2. Option A
  • 3. Option C
- SD-WAN
  • 1. Orchestrator
  • 2. Architecture

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Huawei HCIE-Datacom V1.0 Sample Questions (Q311-Q316):

NEW QUESTION # 311
Drag the authentication modes on the left into their applicable scenarios on the right.

Answer:

Explanation:

Explanation:
A screenshot of a computer AI-generated content may be incorrect.

Comprehensive and Detailed In-Depth Explanation:
1. Portal Authentication:
Scenario:Guests who move frequently and use different types of terminals.
Portal authentication (also known as Web authentication) is commonly used in environments like Wi-Fi hotspots, hotels, and public areas.
Users are redirected to a login page where they enter credentials.
This method is flexible for guests and visitors who may frequently change locations or devices.
Use Case:Wi-Fi access for guests in a corporate environment.
2. MAC Address Authentication:
Scenario:Dumb terminals such as printers and fax machines.
MAC address authentication is useful for devices that do not support interactive authentication methods (like printers or IP phones).
It authenticates devices based on theirMAC addresswithout user intervention.
This method is suitable for static, non-user devices that are typically part of the local network.
Use Case:Ensuring that only authorized printers or IP phones connect to the network.
3. 802.1X Authentication:
Scenario:Office users in scenarios demanding high security.
802.1X is aport-based network access control protocolthat authenticates users before allowing network access.
Typically used in wired or wireless LAN environments where high security is required.
It usesEAP (Extensible Authentication Protocol)methods and integrates with RADIUS servers.
Use Case:Corporate LAN environments with stringent security policies.


NEW QUESTION # 312
The following statement about IPSec VPN is correct ?qo

Answer: C


NEW QUESTION # 313
Configure the ipv6 preference under the IS-IS protocol view, the role of this command is to configure the priority of the Ipv6 protocol generated by the IS-IS protocol

Answer: A


NEW QUESTION # 314
As shown in the figure, R1, R2, R3, and R4 reside in the same MPLS domain, and LDP (Label Distribution Protocol) is used to distribute MPLS labels.
R4 is the egress LSR (Label Switching Router) for the FEC (Forwarding Equivalence Class) 4.4.4.0/24.
To make R4 aware of QoS forwarding priority of a packet sent from R1 and destined for 4.4.4.0/24, Without looking up R4's label forwarding information base, The outgoing label of the FEC on R3 should be _____ (Enter an Arabic numeral without symbols).

Answer:

Explanation:
0
Explanation:
Understanding MPLS LDP and PHP (Penultimate Hop Popping):
# Label Distribution in MPLS LDP:
* LDP assigns labels to FECs so that routers can forward packets based on labels rather than IP lookup.
* Labels are advertised downstream (from R4 to R3, R3 to R2, and so on).
# Penultimate Hop Popping (PHP) Concept:
* The egress LSR (R4) does not require an incoming label for 4.4.4.0/24.
* Instead, R3 (Penultimate LSR) removes the label before forwarding the packet to R4.
* R3 forwards the packet as an IP packet, not an MPLS packet, to avoid an unnecessary label lookup at R4.
* In MPLS LDP, the label "0" is used to indicate an implicit NULL label (PHP operation).
Why the Answer is "0" (Implicit NULL Label)?
# Since R4 is the egress LSR, it does not need a label for 4.4.4.0/24.# R3 assigns the outgoing label as "0" (Implicit NULL Label) to indicate that the label should be removed before sending to R4.# R4 receives the packet as a pure IP packet (no MPLS label).
Why Other Answers Are Incorrect?
# Any value other than "0"
* If R3 assigns a label (e.g., 100), R4 would need to perform an unnecessary MPLS lookup, which is inefficient.
* Using "0" ensures PHP occurs, optimizing the forwarding process.
# Reference: Huawei HCIE Datacom - MPLS LDP and Penultimate Hop Popping (PHP)


NEW QUESTION # 315
Which of the following inter-AS MPLS L3VPN solutions need VPN user data packets to carry MPLS labels when being forwarded between ASs?

Answer: A,B

Explanation:
There are three standard inter-AS MPLS VPN options, as per RFC 4364:
Option A (Back-to-Back VRF):
VRFs are directly connected between ASBRs using routing exchange (like static/BGP).
No label switching between ASs - no MPLS label needed between ASs.
Option B (EBGP Label Exchange):
ASBRs exchange labeled VPNv4 routes via EBGP.
One MPLS label is required - MPLS forwarding across AS boundary is used.
Option C (End-to-End LSP):
Full end-to-end LSP is created across ASs.
MPLS labels are definitely used end-to-end, even between ASs.
Option D (Commonly vendor-specific extensions based on Option B/C):
Similar to Option C - requires MPLS labels.
So:
B . Option B - needs MPLS label ✅
D . Option D - also needs MPLS label ✅
A . Option A - no MPLS label ❌
C . Option C - also uses MPLS label ✅, but not listed as an answer option in this question format (should have been).
Assuming valid options are A, B, D, the correct ones needing MPLS labels are:
Correct answers: B, D


NEW QUESTION # 316
......

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