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Huawei H12-811_V1.0-ENU

H12-811_V1.0-ENU

Exam Code: H12-811_V1.0-ENU

Exam Name: HCIA-Datacom V1.0

Updated: Aug 17, 2026

Q & A: 880 Questions and Answers

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Huawei H12-811_V1.0-ENU Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Building IP Network with Interconnection and Interworking27%- IP routing fundamentals
  • 1. Routing table composition and routing principles
  • 2. Layer 3 forwarding mechanism
- IPv4 addressing
  • 1. Subnet division and VLSM
  • 2. IPv4 address classification and composition
- OSPF protocol basics
  • 1. OSPF working principle and characteristics
  • 2. OSPF single-area configuration
- Static routing
  • 1. Default route and floating static route
  • 2. Static route configuration and application
Topic 2: Network Security and Access Control12%- ACL technology
  • 1. ACL classification and matching rules
  • 2. ACL configuration and application scenarios
- Basic network security
  • 1. Common attack types and defense methods
  • 2. Port security and protection measures
Topic 3: SDN and Network Automation Basics3%- SDN concept and architecture
  • 1. Characteristics and application scenarios
- Network automation
  • 1. Huawei automation tools overview
  • 2. Automation development foundation
Topic 4: Data Communication and Network Basics8%- Protocol models
  • 1. TCP/IP model and protocol stack
  • 2. OSI reference model
- Basic concepts of data communication and networks
  • 1. Network architecture and standard organizations
  • 2. Routing and switching concepts
- Core protocols
  • 1. ARP working principle
  • 2. TCP and UDP characteristics and application scenarios
- Huawei VRP system
  • 1. VRP operating principles and basic operations
  • 2. Data forwarding process
Topic 5: WAN Technology and Application7%- NAT technology
  • 1. NAT configuration and application
  • 2. NAT principles and types
- WAN connection types
  • 1. HDLC and PPP protocols
  • 2. PPP authentication principles
Topic 6: Network Management and Maintenance5%- Fault diagnosis tools
  • 1. Device status and information query
  • 2. Ping and Tracert usage
- Basic network management
  • 1. SNMP protocol overview
  • 2. Log and alarm management
Topic 7: Ethernet Switching Network Construction28%- Ethernet technology
  • 1. Switch working principle and MAC address learning
  • 2. Ethernet frame structure and standards
- Link aggregation and stacking
  • 1. Switch stacking technology overview
  • 2. Link aggregation principles and configuration
- Spanning Tree Protocol
  • 1. STP/RSTP configuration and optimization
  • 2. STP/RSTP principles and port states
- VLAN technology
  • 1. Trunk and access link configuration
  • 2. VLAN principles and division methods
Topic 8: IPv6 Basics5%- IPv6 protocol features
  • 1. ICMPv6 and neighbor discovery
  • 2. Transition technologies overview
- IPv6 address system
  • 1. IPv6 address format and classification
  • 2. IPv6 address configuration

Huawei HCIA-Datacom V1.0 Sample Questions:

1. Which of the following commands can be used to view the CPU usage of the router?

A) display cpu-state
B) display interface
C) display memory
D) display cpu-usage


2. Which of the following statements about the TTL field in the IP packet header is correct?

A) TTL defines the number of packets the source host can send
B) Every time an IP packet passes through a router, its TTL value will be increased by 1
C) Every time an IP packet passes through a router, its TTL value will be reduced by 1
D) TTL defines the time interval that the source host can send packets


3. The modification of the Router ID of the OSPF process takes effect immediately.

A) True
B) False


4. The network shown in the figure below, which of the following statements is correct? (Multiple choice)

A) Host B and host C can ping through
B) Host A and host C can ping through
C) Host A and host B cannot ping through
D) All hosts can ping each other


5. Which statement about the TTL field in the IPv4 header is correct? (Multiple choice)

A) TTL value length is 80bit
B) Every time a packet passes through a Layer 3 device, the TTL value is reduced by 1
C) When there is a loop in the route, the TTL value can be used to prevent the data packet from being forwarded infinitely
D) The range of TTL value is 0-255


Solutions:

Question # 1
Answer: D
Question # 2
Answer: C
Question # 3
Answer: B
Question # 4
Answer: A,B,C
Question # 5
Answer: B,C,D

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