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Huawei H12-891_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Campus Network Planning and Deployment	23%	- Network Services 1. Network Security 2. QoS 3. WLAN - Underlay Network 1. Physical Layer Design 2. IP Address Planning - Campus Network Architecture 1. Hierarchical Design 2. Spine-Leaf Architecture - Overlay Network (VXLAN) 1. BGP EVPN 2. VXLAN Gateway
Topic 2: Advanced Routing and Switching Technology	37%	- IS-IS 1. Network Types 2. Configurations and Troubleshooting 3. Addressing 4. Route Leaking 5. Basic Concepts - Route Control 1. IP Prefix List 2. Route-policy 3. ACL 4. Route Filtering - BGP 1. Path Selection 2. Configurations and Troubleshooting 3. Routing Policies 4. Basic Concepts 5. Route Aggregation - MPLS 1. MPLS TE 2. Basic Concepts 3. LDP 4. Configurations 5. MPLS VPN - OSPF 1. LSA Types 2. Configurations and Troubleshooting 3. Route Calculation 4. Basic Concepts 5. Area Types - Ethernet Switching 1. VXLAN 2. Stack & CSS 3. STP/RSTP/MSTP 4. VLAN
Topic 3: Bearer WAN Planning and Deployment	15%	- Traffic Engineering 1. Flex-Algo 2. RSVP-TE 3. SR-TE - SR (Segment Routing) 1. SRv6 2. SR-MPLS - VPN Services 1. L3VPN 2. EVPN
Topic 4: Network Automation	17%	- Automation Technologies 1. Python Scripting 2. NETCONF/YANG 3. Ansible 4. RESTful API - NCE (Network Cloud Engine) 1. Architecture 2. Deployment - iMaster NCE 1. Intent-Driven Networking
Topic 5: WAN Interconnection Network Planning and Deployment	8%	- SD-WAN 1. Architecture 2. Orchestrator - Inter-AS VPN 1. Option A 2. Option C 3. Option B - MPLS VPN 1. Hub-Spoke 2. Full-Mesh

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Huawei HCIE-Datacom V1.0 H12-891_V1.0 Prüfungsfragen mit Lösungen (Q184-Q189):

184. Frage
SR-MPLS uses the MPLS forwarding plane, and therefore requires MPLS to be enabled. Which of the following conditions must be met for MPLS to be automatically enabled on an interface? (Select all that apply)

A. The static adjacency label of the corresponding interface is configured in the segment routing view.
B. The SRGB is configured for the IGP process.
C. Segment routing is enabled in the system view.
D. Segment routing is enabled for IGP, and IGP is enabled on the interface.

Antwort: C,D

Begründung:
To automatically enable MPLS on an interface inSR-MPLS:
Segment routing must be enabled globallyin thesystem view##
Segment routing must also be enabled under the IGP process, andIGP (OSPF or IS-IS) must be enabled on the interface## Clarifications:
SRGB (Segment Routing Global Block)configuration defines SID ranges butdoes not trigger MPLS enablement## Static adjacency labelsare advanced options and do not auto-enable MPLS ## Correct answers: B, D Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: Segment Routing MPLSSection: SR-MPLS Configuration Requirements

185. Frage
Regarding BGP's recognized arbitrary attributes, which of the following descriptions is correct?

A. There is no requirement to be present in the Update message, and you can decide whether to add it to the Update message on a case-by-case basis
B. must be passed between BGP neighbors
C. All BGP routers must be recognized
D. The BGP router cannot recognize the

Antwort: A,C

186. Frage
In a data communication session between two hosts, which level does the session layer of the oSI model of the host on one end communicate with the osl mode of the host on the other end?

A. Communicate with the conversation layer on the other end B Communicate with the application layer at the other end
B. Communicate with the data link layer at the other end
C. Communicate with the physical layer at the other end
D. Communicate with the presentation layer at the other end

Antwort: A

187. Frage
As shown in the figure, when PE1 receives an ARP request packet, it forwards the packet to PE4. The packet then carries two labels. The label value 201 is carried by the EVPN Type ____ route. (Enter only digits.)

Antwort:

Begründung:
3
Explanation:
Understanding EVPN (Ethernet VPN) Label Allocation and ARP Handling
# What Happens in This Scenario?
1##CE1 (192.168.1.1) sends an ARP request to discover the MAC address of CE2 (192.168.1.2).
2##PE1 receives the ARP request and needs to forward it over the EVPN fabric.
3##To send the broadcast ARP request across the EVPN network, PE1 forwards the packet to PE4 using BUM (Broadcast, Unknown unicast, and Multicast) forwarding.
4##PE4, as the Designated Forwarder (DF), forwards the ARP request to CE2.
Role of Labels in EVPN VXLAN/MPLS Networks
# EVPN uses BGP to distribute MAC/IP reachability information using different route types.
#EVPN Type 2 Route (MAC/IP Advertisement Route):
Used forMAC-to-IP address mappingannouncements.
Ensuresremote VTEPs (PE routers) learn MAC-to-IP bindingsdynamically.
#EVPN Type 3 Route (Inclusive Multicast Route):
Used forBUM traffic (Broadcast, Unknown Unicast, Multicast).
Assigns a multicast label (e.g., 201) to be used for forwarding broadcast packets like ARP requests.
# In this case:
Thelabel 201is used forBUM traffic forwarding.
BUM traffic is handled using an EVPN Type 3 route.
Why is the Answer 3?
#EVPN Type 3 routes carry labels for BUM traffic, which includes ARP requests.
#Label 201 is used for multicast distribution, which is managed by Type 3 routes.
Real-World Application:
VXLAN Data Centers:UsesEVPN Type 3 routes to control BUM traffic efficiently.
Campus Networks:Preventsunnecessary flooding of ARP requests across VXLAN domains.
#Reference:Huawei HCIE-Datacom Guide - EVPN BGP Route Types and Multicast Labeling

188. Frage
NETCONF provides a set of mechanisms for managing network devices. NETCONF operations take place on a configuration datastore of network devices. Which of the following statements is incorrect about the configuration datastore?

A. The <commit> operation submits the configuration in a startup configuration datastore to a running configuration datastore.
B. The <delete-config> operation is oriented at the startup configuration datastore.
C. The <validate> operation is oriented at the candidate configuration datastore.
D. The configuration datastore of network devices can be classified into the candidate, running, and startup configuration datastores.

Antwort: A

Begründung:
NETCONF definesdatastoresto manage device configurations:
running: Active configuration in use
candidate: Staging area for changes before applying
startup: Configuration loaded on reboot
NETCONF operations:
<commit>: Applies changes fromcandidate # running##
<delete-config>: Deletes a specified datastore (e.g., startup) ##
<validate>: Validates syntax/logic in thecandidate datastore##
Statement D is incorrect:<commit> never submits config from startup to running- that's handled automatically at boot time, not through NETCONF commands.
Correct answer: D

189. Frage
......

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