Huawei HCIP-Data Center Network V1.0 H12-893_V1.0 Exam Dumps: Updated Questions & Answers (October 2025)

VXLAN (Virtual Extensible LAN) is a network overlay technology that extends Layer 2 networks over a Layer 3 underlay, commonly implemented in Huawei’s CloudFabric data center solutions. To enable access to a VXLAN network, service access points (e.g., interfaces or sub-interfaces) must be configured on devices such as switches or routers acting as VXLAN Tunnel Endpoints (VTEPs). The question mentions two access modes: "Layer ? sub-interface" and "binding," with the task to fill in the layer acronym in uppercase letters.

Context Analysis:The missing layer is indicated by a "?" and is part of a sub-interface configuration. In networking, sub-interfaces are typically associated with Layer 3 (e.g., for VLAN tagging or VXLAN integration), where they handle IP routing or mapping to overlay networks.

Access Modes:

Layer 3 Sub-Interface:This mode involves configuring a sub-interface on a Layer 3 device (e.g., a router or Layer 3 switch) to terminate VXLAN tunnels and perform routing. The sub-interface is associated with a VNI (VXLAN Network Identifier) and often uses a Layer 3 protocol (e.g., BGP EVPN) to connect to the VXLAN overlay.

Binding:This likely refers to binding a VNI to a Bridge Domain (BD) or interface, a common practice in Huawei’s VXLAN configuration to map the overlay network to a physical or logical port. This can occur at Layer 2 or Layer 3, but the sub-interface context suggests Layer 3 involvement.

The question’s structure implies the layer number for the sub-interface mode, which isLayer 3in VXLAN contexts for routing and gateway functions. Thus, the acronym (digit) to enter is3.References:Huawei CloudFabric Data Center Network Solution – VXLAN Configuration Guide; HCIP-Data Center Network Training – VXLAN Access Methods.

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.

In Huawei’s CloudFabric Solution, iMaster NCE-Fabric automates overlay network (e.g., VXLAN) configuration, while the underlay network is manually deployed. Tenant hosts failing to access external networks indicate a connectivity issue, likely at the overlay-underlay boundary or security layer. Let’s evaluate each option as a possible cause:

A. No return route is configured on the PE:This is a possible cause. The Provider Edge (PE) device (e.g., border leaf or router) must have a return route to the tenant’s VXLAN network for external access. Without it, traffic from external networks cannot reach the DC.POSSIBLE CAUSE.

B. The engineer did not check whether the service loopback interface needs to be configured on the VXLAN network based on the switch model:This is a possible cause. Some Huawei switch models (e.g., CE series) require a service loopback interface as the VTEP source IP. If omitted or misconfigured based on the model, external connectivity fails.POSSIBLE CAUSE.

C. No firewall security policy is configured when host traffic passes through the firewall:This is a possible cause. If a firewall is in the path (e.g., between tenant VPC and external network), a missing security policy (e.g., allowing outbound traffic) blocks access.POSSIBLE CAUSE.

D. The MAC address of the NVE interface on the VXLAN network is not manually specified:This is not a possible cause. The Network Virtualization Edge (NVE) interface in VXLAN does not require a manually specified MAC address; it uses the switch’s system MAC or auto-generates one. iMaster NCE-Fabric typically handles this automatically, and manual specification is neither required nor a common fault point for external access issues.NOT A POSSIBLE CAUSE.

Thus,Dis not a possible cause of the fault.References:Huawei CloudFabric Data Center Network Solution – Troubleshooting Guide; HCIP-Data Center Network Training – VXLAN Connectivity.

Comprehensive and Detailed in Depth Explanation:

A. FTP servers are typically used for file storage.

This is correct. FTP (File Transfer Protocol) servers are indeed a common way to store and share files. They are widely used for basic file storage and transfer needs.  

B. Object storage devices are typically disk arrays.

This is incorrect. Object storage devices are not typically disk arrays in the traditional sense. Object storage is designed for massive amounts of unstructureddata. While they use disks for persistence, they present data as objects with metadata, rather than as blocks or files. Object storage solutions often use distributed systems across many servers, not just a single array.  

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

This is correct. Block storage is ideal for applications that demand high I/O performance, such as databases. Block storage provides raw, unformatted data blocks, giving applications direct control and low latency.  

D. Block storage typically applies to remote backup storage.

This is partially true, but not the typical primary use case. While block storagecanbe used for remote backups, it is generally considered less efficient and more expensive than object storage for this purpose. Object storage is better suited for large, unstructured backup datasets. Block storage is better for applications that need fast read/write speeds, such as databases and virtual machines.  

Therefore, the correct answers are A and C.

References to Huawei Data Center Network documents:

Huawei storage product documentation detailing block storage (e.g., OceanStor Dorado), file storage, and object storage (e.g., OceanStor Pacific) characteristics and use cases.  

Huawei white papers on data center storage architectures, which compare and contrast different storage types.  

Huawei HCIP-Storage training materials, which will have very detailed information regarding each of the storage types, and their use cases.

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.

Multi-Chassis Link Aggregation Group (M-LAG) is a high-availability technology on Huawei CloudEngine (CE) series switches, where two switches appear as a single logical device to downstream devices. The peer-link between the M-LAG peers synchronizes critical information to ensure seamless failover if one device fails. Let’s evaluate the entries:

A. MAC Address Entries:MAC address tables map device MACs to ports. In M-LAG, synchronizing MAC entries ensures that both switches know the location of connected devices. If one switch fails, the surviving switch can forward Layer 2 traffic without relearning MAC addresses, preventing disruptions.Required.

B. Routing Entries:Routing entries (e.g., OSPF or BGP routes) are maintained at Layer 3 and typically synchronized via routing protocols, not M-LAG peer-link packets. M-LAG operates at Layer 2, and while Layer 3 can be overlaid (e.g., with VXLAN), routing table synchronization is not a standard M-LAG requirement.Not Required.

C. IGMP Entries:IGMP (Internet Group Management Protocol) entries track multicast group memberships. While useful for multicast traffic, they are not critical for basic unicast traffic forwarding in M-LAG failover scenarios. Huawei documentation indicates IGMP synchronization is optional and context-specific, not mandatory for general traffic continuity.Not Required.

D. ARP Entries:ARP (Address Resolution Protocol) entries map IP addresses to MAC addresses, crucial for Layer 2/Layer 3 communication. Synchronizing ARP entries ensures the surviving switch can resolve IP-to-MAC mappings post-failover, avoiding ARP flooding or traffic loss.Required.

Thus,A (MAC address entries) and D (ARP entries)are essential for M-LAG synchronization to maintain traffic forwarding during failover, per Huawei CE switch M-LAG design.References:Huawei CloudEngine Series Switch Configuration Guide – M-LAG Section; HCIP-Data Center Network Training – High Availability Technologies.

The physical architecture of a server refers to the tangible and low-level components that constitute the server itself, distinct from logical or software layers. Let’s evaluate each option:

A. Application:Applications are software running on top of an operating system or virtual machine, not part of the server’s physical architecture. They belong to the logical or user layer, not the physical structure.Not Included.

B. VMmonitor (Hypervisor):Assuming “VMmonitor” refers to a hypervisor (e.g., KVM or Xen), it’s a software layer, but in Type-1 hypervisor scenarios, it runs directly on hardware, managing VMs. In Huawei’s context, it’s considered part of the server’s operational architecture when deployed physically.Included.

C. OS (Operating System):The OS (e.g., Linux, Windows) runs directly on server hardware or within a VM. In bare-metal servers, it’s a core component of the physical deployment.Included.

D. Hardware:Hardware (e.g., CPU, RAM, NICs, disks) is the foundational physical architecture of a server, providing the physical resources for all operations.Included.

Thus,A (Application)is not part of the physical architecture, as it’s a higher-level software entity, not a physical component.References:Huawei HCIP-Data Center Network Training – Server Architecture; FusionCompute Physical Architecture Overview.

Link aggregation, often implemented using Link Aggregation Control Protocol (LACP) on Huawei CloudEngine (CE) series switches, combines multiple physical links into a single logical link to enhance network performance and resilience. The primary advantages include:

Load Balancing Supported (B):Link aggregation distributes traffic across multiple links based on hashing algorithms (e.g., source/destination IP or MAC), improving load distribution and preventing any single link from becoming a bottleneck.

Increased Bandwidth (C):By aggregating multiple links (e.g., 1 Gbps ports into a 4 Gbps logical link), the total available bandwidth increases proportionally to the number of links.

Improved Reliability (D):If one link fails, traffic is automatically redistributed to the remaining links, ensuring continuous connectivity and high availability.

However,Improved Forwarding Performance of Switches (A)is not a direct advantage. Forwarding performance relates to the switch’s internal packet processing capabilities (e.g., ASIC performance, forwarding table size), which link aggregation does not inherently enhance. While it optimizes link utilization, it doesn’t improve the switch’s intrinsic forwarding rate or reduce latency at the hardware level. This aligns with Huawei’s CE series switch documentation, where link aggregation is described as enhancing bandwidth and reliability, not the switch’s core forwarding engine.References:Huawei CloudEngine Series Switch Configuration Guide – Link Aggregation Section.

Huawei’s CloudFabric Solution, managed by iMaster NCE-Fabric, provides robust Operations and Maintenance (O&M) capabilities. Let’s evaluate each option:

A. Multi-path detection:This is true. CloudFabric supports multi-path detection (e.g., using ECMP) to verify load balancing and path diversity in the network.TRUE.

B. Network connectivity detection, such as IP ping and MAC ping:This is true. Tools like IP ping and MAC ping are supported for troubleshooting connectivity between devices and endpoints.TRUE.

C. Single-path detection:This is false. While multi-path detection is supported, single-path detection is not a distinct O&M function; connectivity checks typically involve multiple paths or end-to-end verification.FALSE.

D. Visualization of entries (MAC/IP) on logical routers and switches:This is true. CloudFabric provides visualization of MAC and IP entries on logical network elements, aiding in network management and troubleshooting.TRUE.

Thus,A, B, and Dare supported O&M functions.References:Huawei CloudFabric Data Center Network Solution – O&M Features; HCIP-Data Center Network Training – Network Operations.

FusionCompute is Huawei’s virtualization platform, part of the FusionSphere ecosystem, designed for managing virtualized resources in data centers. Its logical architecture consists of two primary modules:

VRM (Virtualization Resource Management):VRM is the management module responsible for centralized control, resource allocation, and monitoring of virtual machines, hosts, and clusters. It provides the user interface and orchestration capabilities for administrators to manage the virtualized environment.

CNA (Compute Node Agent):CNA runs on physical hosts and handles the execution of virtualization tasks, such as VM creation, resource scheduling, and communication with the underlying hypervisor (typically KVM in Huawei’s implementation). It acts as the compute node agent interfacing with the hardware.

Together, VRM and CNA form the core logical architecture of FusionCompute, with VRM managing the environment and CNA executing the compute tasks. The answer, per Huawei’s documentation, isVRM.References:Huawei FusionCompute Product Documentation – Architecture Overview; HCIP-Data Center Network Training – FusionCompute Section.