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Huawei H12-821_V1.0 Exam Questions
- Huawei Certified ICT Professional HCIP Certifications
- Huawei HCIP Datacom Certifications
- Topic 1: Data Communication Fundamentals: This section addresses fundamental ideas in data communication for network engineers, such as network models, data transfer, and network topologies.
- Topic 2: Routing Protocols: This section, intended primarily for network engineers, covers the various routing protocols and covers how to set them up and resolve issues. This category includes both internal gateway protocols (IGPs) like OSPF and RIP and external gateway protocols (EGPs) like BGP.
- Topic 3: Switching Technologies: Aimed at network engineers, this section covers switching principles, VLANs, and STP.
- Topic 4: Network Security: For network engineers, this section covers the fundamentals of network security, including firewalls, virtual private networks, and access control lists (ACLs).
- Topic 5: Network Troubleshooting: Network engineers should refer to this section, which covers frequent network problems, troubleshooting techniques, and optimizing network performance.
Free Huawei H12-821_V1.0 Exam Actual Questions
Note: Premium Questions for H12-821_V1.0 were last updated On Mar. 24, 2026 (see below)
A monitoring plane usually comprises the monitoring units of main control boards and interface boards. This plane can monitor the system environment independently. Which of the following environment monitoring functions can be provided by the monitoring plane?
The monitoring plane's primary role is environmental monitoring, ensuring the stability of the system. Functions like voltage monitoring, temperature tracking, fan speed control, and power management are standard. These are independent of the forwarding or control planes and critical for maintaining device health in network operations .
When deploying a VRRP network, an enterprise administrator sets the virtual IP address to 192.168.1.254 and VRID to 1. Which of the following is the virtual MAC address after the network becomes stable?
Comprehensive and Detailed Step-by-Step
VRRP Virtual MAC Address Format:
The VRRP virtual MAC address is generated using the format:
0000-5e00-01XX, where XX represents the VRID in hexadecimal.
Calculation:
VRID = 1 Hexadecimal = 01.
Virtual MAC = 0000-5e00-0101.
Correct Option:
C (0000-5e00-0101).
HCIA-Datacom Study Guide, Chapter: VRRP MAC Address Format
Huawei VRRP Configuration Guidelines
Let me continue with the next set of questions!
Based on IGMP snooping, IGMP snooping proxy enables a switch to act as a substitute for an upstream Layer 3 device to send IGMP Query messages to downstream hosts, and also to act as a substitute for downstream hosts to send IGMP Report/Leave messages to an upstream device. As such, this function conserves bandwidth between the upstream device and the local device.
GMP Snooping Proxy
IGMP snooping proxy allows the switch to substitute for upstream Layer 3 devices and downstream hosts, reducing unnecessary bandwidth consumption by consolidating IGMP messages.
HCIP-Datacom-Core Reference
The IGMP snooping proxy functionality is described in multicast optimization and IGMP configuration chapters
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows sing routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
OSPF (Open Shortest Path First) mandates that the backbone area (Area 0) serves as the central area for routing information exchange. To avoid inter-area routing loops, routing information is only exchanged between the backbone area and non-backbone areas, not directly between two non-backbone areas. Consequently, each Area Border Router (ABR) must connect to the backbone area to facilitate this routing exchange .
An enterprise administrator views the following details about a BGP route during routine O&M:
yaml
CopyEdit
BGP local router ID: 10.1.1.1
Local AS number: 100
Paths: 2 available, 0 best, 0 select
BGP routing table entry information of 192.168.1.1/32:
From: 10.1.1.2 (10.1.1.2)
Route Duration: 00h01m31s
Relay IP Nexthop: 0.0.0.0
Relay IP Out-Interface: --
Original nexthop: 172.16.1.2
AS-path: 200, origin incomplete, MED 0, localpref 100, pref-val 0, internal, pre 255, invalid for IP unreachable
Not advertised to any peer yet
Which of the following statements are true about the BGP route?
Comprehensive and Detailed Step-by-Step
Analysis of BGP Attributes:
Original Next Hop: The output shows that the original next hop of the route is 172.16.1.2. (A is correct).
Local Router ID: The local BGP router ID is 10.1.1.1, as displayed. (B is correct).
Local AS Number: The local AS number is 100, as displayed. (C is correct).
Incorrect Option:
Local_Pref: Although Local_Pref is an important attribute, this route is marked as invalid due to 'IP unreachable' and thus cannot be preferentially selected.
HCIA-Datacom Study Guide, Chapter: BGP Routing Attributes
Huawei BGP Routing Table Analysis
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