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Huawei H12-893_V1.0 Prüfungsplan:

Thema
Einzelheiten

Thema 1

Data Center Network O&M: Aimed at Data Center Network Engineers, this section evaluates their understanding of operation and maintenance (O&M) challenges in data center networks. It introduces Huawei's intelligent O&M solutions, including iMaster NCE-Fabric and iMaster NCE-FabricInsight, and discusses typical O&M scenarios, management, monitoring, troubleshooting practices, and automated O&M strategies through network service programmability.

Thema 2

Technical Principles and Applications of Virtualization: This section assesses the skills of IT Solution Architects and Data Center Network Engineers in understanding server and network virtualization concepts, benefits, and implementation strategies within data centers. It also introduces Huawei's FusionCompute platform, its features, functionalities, and applications in virtualization scenarios.

Thema 3

Huawei CloudFabric Solution: Targeting IT Solution Architects, this section introduces Huawei's CloudFabric solution, addressing evolving trends and challenges in data center networks. It highlights the solution's components, key features, and advantages in modern data centers.

Thema 4

Data Center Network Technology and Application: This section evaluates the skills of IT Solution Architects and Data Center Network Engineers in understanding the fundamental concepts, evolution, and significance of data centers in modern enterprises. It delves into the overall architecture, including computing, storage, and networking components, and highlights typical application scenarios in sectors like finance, government, and large enterprises. Additionally, it introduces core concepts of data center networking (DCN), focusing on the Spine-Leaf architecture, and provides an overview of essential data center technologies such as VXLAN-based network layers, Underlay and Overlay networks, integrated cabling designs (ToR, EoR, MoR), equipment room modules, and the role of iMaster NCE in managing network devices.

Thema 5

Data Center Network Planning and Deployment: This section assesses Data Center Network Engineers' skills in planning, designing, and deploying data center networks using the CloudFabric solution. It covers network architecture design, data planning, underlay and overlay network design, security considerations, management strategies, and provides a deployment guide for the CloudFabric solution in computing scenarios, including pre-configuration, service provisioning, and simplified deployment processes.

Thema 6

Technical Principles and Application of M-LAG: This section introduces Multi-Chassis Link Aggregation (M-LAG) concepts to Data Center Network Engineers, covering its basic principles, configurations, benefits in enhancing network reliability, mechanisms for failure protection within M-LAG setups, deployment processes, considerations, and best practices for M-LAG in data centers.

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Huawei HCIP-Data Center Network V1.0 H12-893_V1.0 Prüfungsfragen mit Lösungen (Q13-Q18):

13. Frage
In Huawei CloudFabric Solution, iMaster NCE-Fabric uses SNMP to collect alarms and logs of physical devices and vSwitches.

A. FALSE
B. TRUE

Antwort: A

Begründung:
In Huawei's CloudFabric Solution, iMaster NCE-Fabric is the SDN controller responsible for managing physical devices and virtual switches (vSwitches). The method of data collection is critical for network monitoring.
SNMP Usage: Simple Network Management Protocol (SNMP) is a traditional method for collecting alarms and logs from network devices. However, Huawei's modern SDN controllers, including iMaster NCE-Fabric, primarily use telemetry (e.g., gRPC, NETCONF) for real-time data collection from physical devices and vSwitches. Telemetry provides higher efficiency and granularity compared to SNMP.
CloudFabric Approach: The solution leverages telemetry-based data collection, as documented in FabricInsight and iMaster NCE-Fabric guides, to gather alarms, logs, and performance metrics. SNMP may be supported as a legacy option but is not the primary method in this context.
The statement is FALSE (B) because iMaster NCE-Fabric predominantly uses telemetry, not SNMP, for collecting alarms and logs.

14. Frage
How many rollback levels does Huawei's iMaster NCE-Fabric support?

A. 0
B. 1
C. 2
D. 3

Antwort: B

Begründung:
Huawei's iMaster NCE-Fabric is an SDN controller for the CloudFabric data center network solution, providing network management and automation. The rollback feature allows administrators to revert configuration changes to previous states in case of errors. According to Huawei's documentation, iMaster NCE-Fabric supports four rollback levels, enabling the system to store and restore up to four previous configuration versions. This ensures flexibility in undoing changes during network management tasks like upgrades or policy adjustments.
Options Analysis:
A . 3: Incorrect, as it underestimates the supported levels.
B . 4: Correct, aligning with Huawei's specified rollback capability.
C . 2: Incorrect, as it is fewer than the supported levels.
D . 1: Incorrect, as it limits rollback to a single state, which is insufficient for complex management.
Thus, the answer is B (4).

15. Frage
V-STP prevents loops caused by incorrect configurations or connections in an M-LAG.

A. TRUE
B. FALSE

Antwort: A

Begründung:
V-STP (Virtual Spanning Tree Protocol) is a Huawei-specific enhancement of the Spanning Tree Protocol (STP) designed to prevent Layer 2 loops in complex network topologies, including Multi-Chassis Link Aggregation (M-LAG) deployments on Huawei CloudEngine (CE) series switches.
M-LAG Overview: M-LAG allows two switches to appear as a single logical device, connecting to downstream devices via Link Aggregation Groups (LAGs). Without proper loop prevention, incorrect configurations (e.g., misconfigured ports) or physical connections (e.g., redundant links) can cause broadcast storms.
V-STP Role: V-STP extends STP to handle virtualized environments and M-LAG scenarios. It ensures that only one path is active in a loop-prone topology by blocking redundant links, preventing loops caused by misconfigurations or unintended connections. In M-LAG, V-STP coordinates with the peer-link to maintain a loop-free topology.
The statement is TRUE (A) because V-STP is designed to prevent loops in M-LAG deployments due to incorrect configurations or connections.

16. Frage
Which of the following statements are true about the tenant service model? (Select All that Apply)

A. One logical router is mapped to one VRF.
B. A subnet supports the access of only one VM.
C. An EPG can have only one subnet.
D. A tenant can apply for independent compute, storage, and network resources.

Antwort: A,D

Begründung:
The tenant service model in Huawei's data center networks (e.g., CloudFabric with SDN) organizes resources for multi-tenancy. Let's evaluate each statement:
A . A tenant can apply for independent compute, storage, and network resources: This is true. Tenants in a multi-tenant environment can request isolated compute (VMs), storage (volumes), and network (VLANs/VXLAN VNIs) resources, a core feature of Huawei's tenant isolation model. TRUE.
B . One logical router is mapped to one VRF: This is true. A Virtual Routing and Forwarding (VRF) instance is associated with a logical router to provide isolated Layer 3 routing for a tenant, a standard practice in Huawei's network virtualization. TRUE.
C . An EPG can have only one subnet: This is false. An Endpoint Group (EPG) in Huawei's ACI-like models can span multiple subnets, grouping endpoints (e.g., VMs) based on policies, not limited to a single subnet. FALSE.
D . A subnet supports the access of only one VM: This is false. A subnet can support multiple VMs, as it defines an IP address range for a network segment, not a one-to-one VM mapping. FALSE.
Thus, A and B are true statements about the tenant service model.

17. Frage
In the spine-leaf DCN architecture, the border leaf node and service leaf node can be deployed on the same device.

A. TRUE
B. FALSE

Antwort: A

Begründung:
In Huawei's spine-leaf data center network (DCN) architecture, the topology consists of spine nodes (core) and leaf nodes (access/aggregation). Leaf nodes can serve different roles:
Border Leaf Node: Connects the DCN to external networks or other domains, handling Layer 3 routing.
Service Leaf Node: Connects to internal services (e.g., servers, VMs), often handling Layer 2/Layer 3 traffic.
In practice, a single physical device can be configured to perform both roles (border and service) if it has the necessary interfaces and routing capabilities. Huawei's CloudFabric documentation supports this flexibility, allowing a leaf switch to act as both a border and service node based on configuration (e.g., using VRFs or VXLAN gateways). This reduces hardware costs and simplifies deployment in smaller DCNs.
The statement is TRUE (A) because the border leaf and service leaf roles can be deployed on the same device in a spine-leaf architecture.

18. Frage
......

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