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NO.27 Which of the following protocols is used to back up session tables between the active and standby firewalls in the hot standby scenario?

M-LAG

VRRP

BFD

HRP

NO.28 In the computing scenario of Huawei CloudFabric Solution, which of the following services are optional for controller interconnection? (Select All that Apply)

Interconnection with FabricInsight

Interconnection with the authentication server

Interconnection with eSight

Interconnection with the VMM

NO.29 In Huawei CloudFabric Solution, iMaster NCE-Fabric uses SNMP to collect alarms and logs of physical devices and vSwitches.

TRUE

FALSE

NO.30 A VXLAN tunnel is identified by a pair of VTEP IP addresses. During VXLAN tunnel establishment, the local and remote VTEPs attempt to obtain each other’s IP addresses. If the VTEP IP addresses are reachable to each other at Layer 3, a VXLAN tunnel can be established.

TRUE

FALSE

NO.31 Which of the following statements is false about VM service traffic in the computing scenario?

Traffic inside a fabric is VXLAN encapsulated.

Inter-VPC traffic must pass through the firewall.

Traffic between VAS devices and service leaf nodes is VLAN encapsulated.

Traffic between vSwitches on virtual servers and server leaf nodes is VLAN encapsulated.

NO.32 Which of the following statements is false about VXLAN tunnel establishment?

A VXLAN tunnel is identified by a pair of VTEPs.

After a tunnel is established, if one end of the tunnel goes Down, the other end may not go Down.

For a static tunnel, you need to manually configure the local and remote VNIs.

Dynamic tunnels depend on EVPN Type 5 routes to transmit information.

NO.33 Which of the following can be used as the conditions for microsegmentation to divide EPGs? (Select All that Apply)

Operating system

VM name

IP address

MAC address

NO.34 Linux consists of the user space and kernel space. Which of the following functions are included in the kernel space? (Select All that Apply)

The NIC driver sends data frames.

Data encapsulation

Bit stream transmission

Data encryption

NO.35 BGP EVPN defines several types of BGP EVPN routes by extending BGP. Type ? routes are used to advertise host IP routes and external network routes. (Enter only digits.)

NO.36 Which of the following statements are true about common storage types used by enterprises?

FTP servers are typically used for file storage.

Object storage devices are typically disk arrays.

Block storage applies to databases that require high I/O.

Block storage typically applies to remote backup storage.

NO.37 Which of the following are the application scenarios of Huawei CloudFabric Solution? (Select All that Apply)

Container network

OpenFlow network

Hosting

Cloud-network integration

Computing

NO.38 Which of the following nodes is a backbone node of a DC and provides high-speed IP forwarding?

Spine

DC1 leaf

Service leaf

Border leaf

NO.39 VXLAN is a network virtualization technology that uses MAC-in-UDP encapsulation. What is the destination port number used during UDP encapsulation?

4787

4789

4790

4788

NO.40 In the spine-leaf DCN architecture, the border leaf node and service leaf node can be deployed on the same device.

TRUE

FALSE

NO.41 In the DCN architecture, spine nodes connect various network devices to the VXLAN network.

TRUE

FALSE

NO.42 Which of the following are advantages of iMaster NCE-FabricInsight’s telemetry-based performance metric collection? (Select All that Apply)

Efficient transmission

Quasi-real-time data collection

Intelligent data analysis and automated troubleshooting

One-off subscription and continuous data push

NO.43 M-LAG configuration consistency check classifies device configurations into key configurations (Type 1) and common configurations (Type 2). This check can be performed in strict or loose mode based on the processing mode when key configurations are inconsistent. Which of the following statements is false about M-LAG configuration consistency check?

In loose mode, if Type 1 configurations of the two M-LAG member devices are inconsistent, the member interface on the M-LAG backup device is in Error-Down state and an alarm is generated, indicating that Type 1 configurations on the two devices are inconsistent.

If Type 1 configurations of the two M-LAG member devices are inconsistent, certain problems may occur, such as loops and long-period packet loss when the status is normal.

If Type 2 configurations of the two M-LAG member devices are inconsistent, the M-LAG running status may be abnormal. Compared with Type 1 configuration problems, Type 2 configuration problems are more likely to be detected and have less impact on the network.

If Type 2 configurations of the two M-LAG member devices are inconsistent, an alarm that indicates key and common configuration inconsistencies is generated.

To identify the false statement, we evaluate each option based on standard M-LAG documentation, such as Huawei’s and Arista’s guidelines, which are commonly referenced in HCIP-Data Center Network training.
Option A: In loose mode, if Type 1 configurations of the two M-LAG member devices are inconsistent, the member interface on the M-LAG backup device is in Error-Down state and an alarm is generated, indicating that Type 1 configurations on the two devices are inconsistent.
Evaluation: This statement is true. In loose mode, inconsistencies in Type 1 (key) configurations are still critical, as they can affect M-LAG operation. According to Huawei M-LAG Configuration Guide, when Type 1 configurations are inconsistent in loose mode, the system may place the member interface on the backup device into an Error-Down state and generate an alarm to alert administrators. This ensures that critical issues are flagged, even in loose mode, to prevent loops or packet loss.
Conclusion: True.
Option B: If Type 1 configurations of the two M-LAG member devices are inconsistent, certain problems may occur, such as loops and long-period packet loss when the status is normal.
Evaluation: This statement is true. Type 1 configurations are essential for M-LAG operation, and inconsistencies can lead to severe network issues. For example, mismatched LACP settings or VLAN mappings can create loops or cause packet loss, as noted in Arista M-LAG Documentation. These problems can persist even when the system appears normal, making consistency checks critical for troubleshooting and O&M.
Conclusion: True.
Option C: If Type 2 configurations of the two M-LAG member devices are inconsistent, the M-LAG running status may be abnormal. Compared with Type 1 configuration problems, Type 2 configuration problems are more likely to be detected and have less impact on the network.
Evaluation: This statement is true. Type 2 (common) configurations, such as QoS or STP settings, are less critical but can still affect network performance. According to Huawei M-LAG Best Practices, Type 2 inconsistencies are often detected during consistency checks but have a lower impact on M-LAG operation compared to Type 1 issues. They are also more likely to be flagged during monitoring, as they are less severe and easier to resolve.
Conclusion: True.
Option D: If Type 2 configurations of the two M-LAG member devices are inconsistent, an alarm that indicates key and common configuration inconsistencies is generated.
Evaluation: This statement is false. While Type 2 (common) configuration inconsistencies are detected during consistency checks, they do not typically trigger alarms, especially alarms that specifically indicate both key and common configuration inconsistencies. According to Huawei M-LAG Configuration Guide and Arista M-LAG Documentation, Type 2 inconsistencies may be logged or reported in system logs but are not severe enough to generate critical alarms unless they significantly impact network operation. Alarms are more commonly associated with Type 1 (key) configuration inconsistencies, as they pose a higher risk to M-LAG functionality.
Conclusion: False.

NO.44 Which of the following can be deployed to enhance DC reliability? (Select All that Apply)

Power supply redundancy

M-LAG

Monitor Link

Controller cluster

NO.45 Which of the following technologies are open-source virtualization technologies? (Select All that Apply)

Hyper-V

Xen

FusionSphere

KVM

NO.46 An enterprise builds a DC and deploys iMaster NCE-Fabric to automatically deliver network configurations. After the engineer manually deploys the underlay network and delivers overlay network configurations through iMaster NCE-Fabric, it is found that tenant hosts cannot access external networks. Which of the following is not a possible cause of this fault?

No return route is configured on the PE.

The engineer did not check whether the service loopback interface needs to be configured on the VXLAN network based on the switch model.

No firewall security policy is configured when host traffic passes through the firewall.

The MAC address of the NVE interface on the VXLAN network is not manually specified.

NO.47 When an SDN controller cluster is deployed in Huawei CloudFabric Solution, which of the following network planes are divided based on carried services? (Select All that Apply)

BGP microservice plane

Southbound service plane

Northbound management plane

Internal communication plane

NO.48 Assume that a VXLAN tunnel is monitored on a Huawei CE series switch and that the tunnel status is Down or the tunnel fails to be dynamically established. In this scenario, which of the following statements are true about how to check the cause of the fault? (Select All that Apply)

Run the display vxlan statistics command to check the cause of the fault.

Run the display vxlan peer command to check the cause of the fault on the peer device of the tunnel.

Run the display vxlan troubleshooting command to check the causes of at most the latest five failures to dynamically establish a VXLAN tunnel.

Run the display vxlan troubleshooting command to check at most the latest five reasons why a VXLAN tunnel goes Down.

NO.49 Which of the following statements is false about the overlay technology and VXLAN protocol?

A VXLAN tunnel endpoint that performs encapsulation is called a VNI.

VXLAN uses ECMP of the underlay network to improve network forwarding performance.

A VXLAN network is built based on UDP.

VXLAN expands the number of subnets to 16 million and supports multi-tenancy.

NO.50 Fill in blank
The FusionCompute logical architecture consists of two modules: ___ and CNA. (Enter the acronym in uppercase letters.)

Huawei H12-893_V1.0 Exam Syllabus Topics:

Topic	Details
Topic 1	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.
Topic 2	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.
Topic 3	Technical Principles and Applications of VXLAN: Aimed at Data Center Network Engineers, this section evaluates their understanding of the necessity, development, and foundational concepts of VXLAN technology in addressing traditional network limitations. It also delves into the principles of Ethernet VPN (EVPN) as a control plane for VXLAN and presents practical VXLAN deployment examples in common data center scenarios.
Topic 4	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.
Topic 5	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.