Free Practice Questions for Huawei H12-893_V1.0 Exam

Zero Touch Provisioning (ZTP) in Huawei’s CloudFabric automates device setup using DHCP. Let’s evaluate each option:

A. Default gateway address:This is true. DHCP can deliver the default gateway address to configure routing for the device.TRUE.

B. SFTP server address:This is false. SFTP server addresses are not standard DHCP options; they may be configured manually or via other protocols (e.g., TFTP for boot files).FALSE.

C. DNS server address:This is true. DHCP can provide DNS server addresses (Option 6) for name resolution during ZTP.TRUE.

D. Temporary management IP address:This is true. DHCP assigns temporary IPs (e.g., Option 50) for management during initial provisioning in ZTP.TRUE.

Thus,A, C, and Dcan be delivered by a DHCP server in ZTP.References:Huawei CloudFabric Data Center Network Solution – ZTP Configuration; HCIP-Data Center Network Training – ZTP Process.

Huawei’s CloudFabric solution provides an SDN-based framework for data center network management, supporting automation across the network lifecycle. Let’s evaluate each phase:

A. Planning and construction:This is true. CloudFabric automates network design, resource allocation, and deployment during the planning and construction phase using tools like iMaster NCE.TRUE.

B. Service provisioning:This is true. Automated service orchestration (e.g., VXLAN tunnel setup, tenant configuration) is a key feature during provisioning.TRUE.

C. O&M and monitoring:This is true. CloudFabric offers real-time monitoring, fault detection, and performance optimization through centralized management.TRUE.

D. Change optimization:This is true. The solution supports automated upgrades, policyadjustments, and optimization based on analytics, covering the change management phase.TRUE.

All phasesA, B, C, and Dare supported by CloudFabric’s full-lifecycle automation.References:Huawei CloudFabric Data Center Network Solution – Automation Features; HCIP-Data Center Network Training – Lifecycle Management.

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 toHuawei 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 inArista 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 toHuawei 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 triggeralarms, especially alarms that specifically indicate both key and common configuration inconsistencies. According toHuawei M-LAG Configuration GuideandArista 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.

Huawei’s iMaster NCE-Fabric is an SDN controller for the CloudFabric Solution, providing network orchestration and management. It includes built-in servers to support its operations. Let’s evaluate each option:

A. DNS server:This is false. iMaster NCE-Fabric does not include a built-in DNS server; it relies on external DNS services for name resolution, configured during deployment.FALSE.

B. RADIUS authentication server:This is false. RADIUS authentication is typically handled by external AAA servers; iMaster NCE-Fabric integrates with them but does not embed a RADIUS server.FALSE.

C. DHCP server:This is true. iMaster NCE-Fabric includes a built-in DHCP server to assign temporary IP addresses during Zero Touch Provisioning (ZTP) or initial device configuration.TRUE.

D. Version file server:This is true. A version file server is built into iMaster NCE-Fabric to store and deliver software images or configuration files for device upgrades and management.TRUE.

Thus,C (DHCP server) and D (Version file server)are built into iMaster NCE-Fabric.References:Huawei CloudFabric Data Center Network Solution – iMaster NCE-Fabric Features; HCIP-Data Center Network Training – Controller Services.

In Huawei’s spine-leaf DCN architecture, nodes have distinct roles:

A. Spine:The spine nodes form the backbone of the data center, providing high-speed IP forwarding between leaf nodes. They handle east-west traffic with non-blocking connectivity, making them the core backbone nodes.Correct.

B. DC1 leaf:This is not a standard node type; it may be a typo or misnomer. Leaf nodes connect to endpoints, not act as backbones.Incorrect.

C. Service leaf:Service leaf nodes connect to internal services (e.g., servers), not the backbone, focusing on access rather than high-speed forwarding.Incorrect.

D. Border leaf:Border leaf nodes connect to external networks, handling routing, not serving as the internal backbone.Incorrect.

Thus, the answer isA (Spine).References:Huawei CloudFabric Data Center Network Solution – Spine-Leaf Architecture; HCIP-Data Center Network Training – Node Roles.

iMaster NCE-Fabric automates network configuration delivery in Huawei’s CloudFabric. Let’s evaluate each statement:

A. Logical switches are mainly used for Layer 3 communication between hosts on a VXLAN network. These switches correspond to Layer 3 gateway configurations such as VBDIF interface and VPN instance configurations on physical devices:This is false. Logical switches in iMaster NCE-Fabric primarily handle Layer 2 communication (e.g., bridging within a VNI), corresponding to Bridge Domains (BDs) and Layer 2 VNIs. Layer 3communication is managed by gateways, not logical switches.FALSE.

B. An end port represents an online host. It corresponds to the traffic encapsulation type (whether a VLAN tag is carried) configured on a Layer 2 sub-interface of a physical device:This is true. End ports map to host connections, with encapsulation (VLAN-tagged or untagged) configured on sub-interfaces.TRUE.

C. A logical port is equivalent to an independent physical port that is used by a host to connect to a VXLAN network. It corresponds to the Layer 2 sub-interface configuration on a physical device:This is true. Logical ports represent host connections, mapped to Layer 2 sub-interfaces for VXLAN access.TRUE.

D. Logical switches are mainly used for Layer 2 communication between hosts on a VXLAN network. These switches correspond to BD and Layer 2 VNI configurations on physical devices:This is true. Logical switches facilitate Layer 2 connectivity, aligning with BD and VNI settings.TRUE.

Thus,Ais the false statement because logical switches are for Layer 2, not Layer 3, communication.References:Huawei CloudFabric Data Center Network Solution – iMaster NCE-Fabric Configuration; HCIP-Data Center Network Training – Logical Network Mapping.

EVPN (Ethernet VPN) is a control plane technology used with VXLAN to provide Layer 2 and Layer 3 services in data center networks, including Huawei’s implementations. EVPN routes are categorized into types, with Type 5 routes (IP Prefix routes) serving a specific purpose:

Type 5 Routes:These routes advertise IP prefixes and are used for inter-subnet routing, allowing communication between different VXLAN Virtual Network Identifiers (VNIs) or between VXLAN networks and external networks. They carry a Layer 3 VNI and IP prefix information, enabling routers or gateways to perform Layer 3 forwarding.

Usage Scope:Type 5 routes are not limited to hosts on a VXLAN network accessing external networks. They are also used by network devices (e.g., gateways, routers) within the EVPN domain to facilitate routing between subnets, including intra-VXLANcommunication. For example, a centralized gateway or distributed gateway can use Type 5 routes to route traffic within the data center or to external networks, not just host-initiated access.

The statement isFALSE (B)because Type 5 routes are not exclusively for hosts on a VXLAN network to access external networks; they support broader Layer 3 routing functions across the EVPN domain.References:Huawei HCIP-Data Center Network Training – EVPN Routing; CloudFabric EVPN Configuration Guide.

Huawei’s CloudFabric intelligent O&M solution, leveraging iMaster NCE-Fabric and FabricInsight, uses the "1-3-5" principle (detect within 1 minute, locate within 3 minutes, rectify within 5 minutes) to handle faults. This approach analyzes faults across multiple dimensions. Let’s evaluate each option:

A. Device:This is supported. The solution monitors device-level metrics (e.g., CPU, memory) to detect and locate faults.SUPPORTED.

B. Protocol:This is supported. Protocol issues (e.g., OSPF conflicts, BGP errors) are analyzed for fault detection and resolution.SUPPORTED.

C. Service:This is supported. Service-level faults (e.g., tenant connectivity, VPC issues) are tracked and addressed.SUPPORTED.

D. Application:This is not supported. The "1-3-5" troubleshooting focuses on network infrastructure (devices, protocols, services, configurations), not application-layer issues, which are outside its scope.NOT SUPPORTED.

E. Configuration:This is supported. Configuration errors (e.g., mismatched VNIs) are detected and rectified as part of the process.SUPPORTED.

Thus,D (Application)is not a dimension supported by the "1-3-5" troubleshooting function.References:Huawei CloudFabric Data Center Network Solution – Intelligent O&M; HCIP-Data Center Network Training – Troubleshooting Dimensions.

VXLAN (Virtual Extensible LAN) is a network overlay technology that encapsulates Layer 2 Ethernet frames within UDP packets to extend Layer 2 networks over Layer 3 infrastructure, widely used in Huawei’s CloudFabric data center solutions. The encapsulation process, often referred to as "MAC-in-UDP," involves wrapping the original Ethernet frame (including MAC addresses) inside a UDP packet.

UDP Encapsulation:The VXLAN header follows the UDP header, and the destination UDP port number identifies VXLAN traffic. The Internet Assigned Numbers Authority (IANA) has officially assignedUDP port 4789as the default destination port for VXLAN.

Options Analysis:

A. 4787:This is not a standard VXLAN port and is not recognized by IANA or Huawei documentation.

B. 4789:This is the correct and widely adopted destination port for VXLAN, as specified in RFC 7348 and implemented in Huawei’s VXLAN configurations.

C. 4790:This port is not associated with VXLAN and is unused in this context.

D. 4788:This is not a standard VXLAN port; it may be confused with other protocols but is not correct for VXLAN.

Thus, the destination port number used during UDP encapsulation in VXLAN isB (4789), aligning with Huawei’s VXLAN implementation standards.References:Huawei CloudFabric Data Center Network Solution – VXLAN Configuration Guide; RFC 7348 – Virtual eXtensible Local Area Network (VXLAN).