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Huawei H12-891_V1.0 exam is intended for professionals who have experience working with data communication technologies, including network architects, network engineers, and network administrators. Candidates who Pass H12-891_V1.0 Exam will have a deep understanding of the latest data communication technologies, including software-defined networking (SDN), network virtualization, and network automation.
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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Exam is a certification exam designed for professionals who want to demonstrate their expertise in designing, building, and managing large-scale data communication networks. As a high-level certification exam, it validates the skills and knowledge of candidates in developing complex network solutions and troubleshooting network issues. H12-891_V1.0 Exam covers a wide range of topics, including network architecture design, network security, routing and switching protocols, network virtualization, and more.
NEW QUESTION # 240
When Huawei iMaster NCE-IP is used to configure SR-MPLS TE tunnels, which of the following protocols is used by the controller to collect device running status information?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth
The iMaster NCE-IP controller uses Telemetry to collect real-time device running status information efficiently and with low latency.
Telemetry (A): Enables continuous data streaming to the controller, including network performance and link state information.
Telnet (B): Used for manual device management and not suitable for automated data collection.
BGP-LS (C): Used for distributing link-state information, but not for real-time performance data collection.
IS-IS (D): An IGP protocol, not used for collecting device status.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei iMaster NCE-IP Configuration Guide
Huawei Telemetry Configuration and Monitoring Guide
NEW QUESTION # 241
What can be determined from the following IS-IS peer output?
Peer information for ISIS(1):
Peer System ID: ee8c.a0c2.baf3
Interface: GE0/0/0
State: Up
HoldTime: 7s
Type: L1
PRI: 64
MT IDs supported: 0(UP), 2(UP)
Local MT IDs: 0, 2
Area Address(es): 49.0022
Peer IP Address(es): 10.1.34.1
Peer IPv6 Address(es): FE80::2E0:FCFF:FE98:2576
Answer: A
Explanation:
Comprehensive and Detailed
The IS-IS peer output shows:
IPv4 Peer Address: 10.1.34.1
IPv6 Peer Address: FE80::2E0:FCFF:FE98:2576
MT IDs (Multi-Topology) Supported: 0 (IPv4), 2 (IPv6)
Since both IPv4 and IPv6 peer addresses are listed, it confirms that both IPv4 and IPv6 IS-IS neighbor relationships are established between R4 and ee8c.a0c2.baf3.
📖 Reference: Huawei HCIE Datacom - IS-IS Multi-Topology Support
NEW QUESTION # 242
When Huawei iMaster NCE-IP is used to configureSR-MPLS TE tunnels, which of the following protocols is used by the controller to collect device running status information?
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
TheiMaster NCE-IP controllerusesTelemetryto collect real-timedevice running statusinformation efficiently and with low latency.
Telemetry (A):Enables continuousdata streamingto the controller, including network performance and link state information.
Telnet (B):Used for manual device management and not suitable for automated data collection.
BGP-LS (C):Used fordistributing link-state information, but not for real-time performance data collection.
IS-IS (D):AnIGP protocol, not used for collecting device status.
NEW QUESTION # 243
To allow only authorized users (users who obtain IP addresses through authorized DHCP servers or use specified static IP addresses) to access the network shown in the figure, which of the following solutions can be used?
Answer: B
Explanation:
Understanding Network Security for Authorized User Access
#Problem Scenario:
Only authorized users should be allowed network access.
Users can obtain IP addresses either via DHCP or a predefined static IP list.
Unauthorized users (e.g., attackers using rogue DHCP servers or spoofed IPs) must be blocked.
#Required Technologies for Securing Access:
1##DHCP Snooping- Protects againstrogue DHCP serversand builds abinding table of legitimate DHCP clients.
2##IP Source Guard (IPSG)- Ensures that onlyauthorized IP-MAC bindingscan send traffic.
Analysis of the Answer Choices:
#A. DAI + Port Security (Incorrect)
DAI (Dynamic ARP Inspection)prevents ARP spoofingbut doesnot validate IP-MAC-DHCP bindings.
Port Securityonlylimits MAC addresses per portbut doesnot verify IP addresses.
Does NOT protect against unauthorized static IP users.
#B. DHCP Snooping + IPSG (Correct)
DHCP Snooping:
Preventsrogue DHCP servers from assigning unauthorized IPs.
Builds aDHCP binding table(IP-MAC-Port).
IP Source Guard (IPSG):
Blocks trafficfrom IPs not listed in the DHCP snooping binding table.
Can be configured to allow manually specified static IP addresses.
Best choice to allow only authorized users (both DHCP and static IP users).
#C. DHCP Snooping + DAI (Incorrect)
DAI (Dynamic ARP Inspection) prevents ARP spoofingbutdoes not block unauthorized static IP users.
Lacks IP-level access controlneeded to enforce static IP policies.
#D. DAI + IPSG (Incorrect)
IPSG (IP Source Guard) needs DHCP Snooping to build the binding table.
Without DHCP Snooping, IPSG cannot function properly.
DAI does not provide complete protection against unauthorized users.
Why is the Answer B (DHCP Snooping + IPSG)?
#Ensures only users assigned a DHCP IP (or authorized static IPs) can send traffic.
#Blocks rogue DHCP servers and unauthorized static IP users.
Real-World Application:
Enterprise Networks:Prevents unauthorizedstatic IP users or attackers from accessing VLANs.
Public Wi-Fi Security:Ensures onlyauthorized users receive IPs and can send traffic.
#Reference:Huawei HCIE-Datacom Guide - DHCP Snooping and IPSG Security Mechanisms
NEW QUESTION # 244
In cross-domain VPN-OptionB packet forwarding, two ASBRs exchange the same LSP tags once.
Answer: B
NEW QUESTION # 245
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