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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Campus Network Planning and Deployment | 23% | - Campus Network Architecture Design
|
| Topic 2: Network Automation Technologies and Practice | 17% | - Huawei Automation Solutions
|
| Topic 3: Advanced Routing and Switching Technologies | 37% | - Advanced Switching Technologies
|
| Topic 4: Bearer WAN Planning and Deployment | 15% | - Bearer Network Architecture
|
| Topic 5: WAN Interconnection Network Planning and Deployment | 8% | - WAN Interconnection Technologies
|
>> H12-891_V1.0 Valid Test Question <<
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NEW QUESTION # 276
The MAC address of a PC is 5489-98FB-65D8 The administrator wants this PC to get the specified P address
1921681.11/24 from the DHCP server So the administrator-configured command should be,
Answer: A
NEW QUESTION # 277
BGP EVPN can be used as the VXLAN control plane protocol to completely prevent traffic flooding, such as broadcast ARP packets, on the VXLAN network.
Answer: B
Explanation:
Understanding VXLAN and BGP EVPN Control Plane
VXLAN (Virtual eXtensible LAN) is an overlay network technology that enables Layer 2 (L2) extension over an IP-based network using MAC-in-UDP encapsulation.
๐น Traditional VXLAN Flooding Issue:
Without BGP EVPN, VXLAN uses flood-and-learn behavior for MAC address learning.
Broadcast, Unknown Unicast, and Multicast (BUM) traffic is flooded to all VTEPs, which is inefficient.
๐น How Does BGP EVPN Solve Flooding?
BGP EVPN (Ethernet VPN) replaces the flood-and-learn model with a distributed control plane.
MAC/IP bindings are advertised through BGP EVPN Type 2 routes, eliminating the need for flooding ARP requests.
VXLAN routers learn MAC addresses proactively instead of relying on flooding.
Why is the Answer TRUE?
โ
BGP EVPN fully prevents ARP flooding by distributing MAC/IP bindings via control plane updates.
โ
VTEPs only send traffic to known destinations, reducing network congestion.
โ
BGP EVPN is the industry standard for large-scale data center and campus VXLAN deployments.
Real-World Application:
Data Centers: Avoids unnecessary ARP request flooding in large cloud networks.
Campus Networks: Reduces L2 broadcast storms, improving network efficiency.
Service Provider Networks: Enables scalable multi-tenant VXLAN solutions.
โ
Reference: Huawei HCIE-Datacom Guide - VXLAN BGP EVPN Control Plane Architecture
NEW QUESTION # 278
Portal authentication is recommended for scenarios with high mobility and numerous terminal types, such as shopping malls and supermarkets. MAC address authentication is recommended for dumb terminals that do not support Portal authentication, such as printers, fax machines, and IP phones.
Answer: B
Explanation:
Portal Authentication vs. MAC Authentication
#Portal Authentication
Used inhigh-mobility environments(e.g., shopping malls, hotels, and public Wi-Fi hotspots).
Usersauthenticate via a web portalbefore gaining network access.
Supports multiple device types (smartphones, laptops, tablets, etc.).
#MAC Address Authentication
Used fordumb devicesthatcannot perform interactive authentication(e.g., printers, IP phones, cameras).
The network authenticates devices based on their MAC addresses automatically.
Often used inenterprise LANsto ensureunattended devices get network access securely.
Reference from Huawei HCIE-Datacom Documentation:
Huawei CloudCampus Authentication Guide - Portal and MAC Authentication HCIE-Datacom Training Material - Access Control Mechanisms
NEW QUESTION # 279
Refer to the following command output on the router R3. Which of the following statements are correct?
<R3> display interface Tunnel
Tunnel0/0/0 current state : UP
Line protocol current state : UP
Last line protocol up time : 15:21:26 UTC-08:00
Description: HUAWEI, AR Series, Tunnel0/0/0 Interface
Route Port, The Maximum Transmit Unit is 1500
Internet Address is 20.1.1.2/24
Encapsulation is TUNNEL, loopback not set
Tunnel source 10.0.3.3 (LoopBack0), destination 10.0.1.1
Tunnel protocol/transport GRE/IP, key disabled
keepalive disabled
Checksumming of packets disabled
Answer: A,C,D
Explanation:
From the output:
Tunnel destination IP address: Clearly shown as destination 10.0.1.1 โ โ
Tunnel interface MTU: Shown as The Maximum Transmit Unit is 1500 โ โ
Tunnel interface IP: Shown as Internet Address is 20.1.1.2/24 โ โ
Tunnel source: Tunnel source 10.0.3.3 (LoopBack0) โ Not 10.0.1.1 โ โ Therefore:
A - Correct
B - Correct
C - Correct
D - Incorrect (confuses destination as source)
Correct answers: A, B, C
NEW QUESTION # 280
In the Huawei CloudCampus Solution, which of the following devices can go online through the registration query center?
Answer: A,B,C,D
Explanation:
Comprehensive and Detailed
The Huawei Registration Query Center allows devices to register and go online automatically in a cloud-managed environment.
โ Supported Devices:
Switches โ
Access Routers (AR) โ
Access Points (APs) โ
Firewalls โ
โ How It Works:
Devices obtain their registration information via DHCP Option 148 or pre-configured credentials.
The devices then connect to the registration query center to retrieve configuration and authentication details.
Once authenticated, they go online and become manageable via iMaster NCE-Campus.
๐ Reference: Huawei HCIE Datacom - CloudCampus Device Registration
NEW QUESTION # 281
......
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