Huawei H12-891_V1.0 Dumps–Try Free H12-891_V1.0 Exam Questions Demo

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Huawei H12-891_V1.0 Exam Syllabus Topics:

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

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Huawei HCIE-Datacom V1.0 Sample Questions (Q310-Q315):

NEW QUESTION # 310
What is the following description of LDP reliability?

A. The LDP ERR can also generate an ISP for a tag map from a non-optimal next hop, and create a forwarding table entry as a backup of the primary LSP
B. LDP and LGP linkage, the need for IGP to suppress the release of routes, to ensure that LDP and LGP paths are consistent
C. Manually configured LDP FRR policy defaults to a 32-bit backup route that triggers LDP to establish a backup ISP
D. LGP GR (Graceful Restart) takes advantage of the high difference between the LS forwarding plane and the control plane to realize that the device forwards without interruption when the protocol is restarted or the master-standby is reversed

Answer: C

NEW QUESTION # 311
Which of the following technologies can be used to isolate users in the same VLAN?

A. IPSG
B. Port isolation
C. Ethernet port security
D. Super VLAN

Answer: A,B,C

Explanation:
Understanding User Isolation in the Same VLAN
In a traditional VLAN, all devices within the same VLAN can communicate unless additional security policies are applied. To isolate users within the same VLAN, the following technologies can be used:
# B. Port Isolation (Private VLAN or Layer 2 Isolation)
* Prevents communication between ports within the same VLAN.
* Common in enterprise and campus networks to improve security.
* Example: Isolating guest users from employees within the same VLAN.
# C. IPSG (IP Source Guard)
* Blocks IP address spoofing within the same VLAN.
* Uses DHCP snooping binding table to verify whether a device is using an authorized IP address.
# D. Ethernet Port Security
* Limits the number of MAC addresses allowed per port.
* Prevents unauthorized devices from communicating within the VLAN.
# A. Super VLAN (Incorrect Choice)
* Super VLAN groups multiple VLANs under a single Layer 3 gateway, but it does not provide isolation within the same VLAN.
Real-World Application:
* Public Wi-Fi Networks: Ensures that users within the same VLAN cannot communicate with each other.
* Enterprise Security: Prevents unauthorized access or attacks within shared VLANs.
# Reference: Huawei HCIE-Datacom Guide - VLAN Security and User Isolation Technologies

NEW QUESTION # 312
This figure shows an SRv6 (Segment Routing over IPv6) packet. If the Destination Address field in the IPv6 basic header is FC04::4, the value of the SL (Segment Left) field in the SRv6 header should be ____. (Enter only digits.)

Answer:

Explanation:
1
Explanation:
Comprehensive and Detailed In-Depth 1. Understanding SRv6 (Segment Routing over IPv6):SRv6 uses the IPv6 header along with an additional SRH (Segment Routing Header) to implement segment routing within an IPv6 network. The SRH contains:Segment List (SL): A list of IPv6 addresses (segments) to traverse.SL (Segments Left): An integer that indicates the number of segments yet to be visited.Active Segment: The next IPv6 address in the segment list, stored in the Destination Address field of the IPv6 header.2. Analyzing the Given Scenario:The segment list (SL) in the SRH header shows:FC04::400FC04::4FC03::3The segment list is processed in reverse order (from bottom to top).SL (Segments Left) indicates the index of the active segment in the list.The Destination Address in the IPv6 header is currently FC04::4, indicating that the active segment is the second element in the list.3. Determining the Value of SL:The indexing in the segment list starts from 0.Since FC04::4 is the second segment (from the bottom), the value of SL will be 1.This means that 1 segment is left to be processed after the current one (FC04::4).Once the packet reaches FC04::4, the SL value will decrement to 0, and the next segment (FC03::3) will be processed.4. Why the Answer is 1:The SL value decreases as segments are processed.As the current active segment is the second in the list (from the bottom), the SL value is 1.
Reference:
Huawei HCIE-Datacom V1.0 Training Materials
Huawei Official Documentation: SRv6 Configuration Guide
RFC 8754 - IPv6 Segment Routing Header (SRH)
HCIE-Datacom Knowledge Base: Segment Routing over IPv6 (SRv6)

NEW QUESTION # 313
Based on the figure, which of the following statements are correct?
<R1>tracert 172.17.1.5
1 10.1.12.2 40 ms 10 ms 10 ms
2 10.1.24.2 30 ms 20 ms 20 ms
3 10.1.34.1 20 ms 20 ms 20 ms
4 10.1.13.1 20 ms 20 ms 10 ms
5 10.1.12.2 20 ms 30 ms 20 ms
6 10.1.24.2 30 ms 30 ms 30 ms
7 10.1.34.1 50 ms 40 ms 40 ms
8 10.1.13.1 20 ms 30 ms 30 ms

A. C. The path for R1 to access 172.17.1.5 is normal.
B. A. R1 does not have a route to 172.17.1.5.
C. D. A loop occurs when R1 accesses 172.17.1.5.
D. B. R1 has a route to 172.17.1.5.

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:
The traceroute output shows that the path from R1 to the destination 172.17.1.5 is looping. After reaching the IP 10.1.13.1, the path goes back to 10.1.12.2, repeating the previous hops. This indicates a routing loop, where R1 continuously forwards packets through a circular path, never reaching the destination. Routing loops typically occur due to inconsistent or incorrect routing table entries, often because of routing protocol misconfigurations.

NEW QUESTION # 314
OSPFv2 is an IGP running on IPv4 networks, whereas OSPFv3 is an IGP running on IPv6 networks. OSPFv2 and OSPFv3 have similar LSA types, but their LSA functions are slightly different. Which of the following is not an OSPFv3 LSA type?

A. Network-LSA
B. AS-External-LSA
C. Router-LSA
D. ASBR-Summary-LSA

Answer: D

Explanation:
Comprehensive and Detailed Explanation:
OSPFv2 (for IPv4) and OSPFv3 (for IPv6) LSAs differ in function and naming conventions.
Key Differences in OSPFv3 LSAs:
* OSPFv3 does not use ASBR-Summary-LSA. Instead, it introduces new Inter-Area Prefix LSAs (Type 3) and Inter-Area Router LSAs (Type 4).
* OSPFv2 ASBR-Summary-LSA (Type 4) is replaced in OSPFv3 by Inter-Area Router LSA (Type
4).
OSPFv3 LSA Types:
# Router-LSA (Type 1) - Describes router interfaces and links.# Network-LSA (Type 2) - Describes broadcast network links.# Inter-Area Prefix LSA (Type 3) - Replaces Summary LSAs for routes.# Inter- Area Router LSA (Type 4) - Replaces ASBR Summary LSAs.# AS-External LSA (Type 5) - Describes external routes (same as OSPFv2).
Since ASBR-Summary-LSA (Type 4) does not exist in OSPFv3, the correct answer is A.
# Reference: Huawei HCIE Datacom - OSPFv3 LSA Types

NEW QUESTION # 315
......

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