Pass the Huawei HCIP-Data Center H12-893_V1.0 Questions and answers with ValidTests

Huawei’s CloudFabric Solution supports various data center scenarios. Let’s evaluate each option:

A. Container network:This is true. CloudFabric supports containerized environments (e.g., Kubernetes) with VXLAN and SDN integration.TRUE.

B. OpenFlow network:This is false. CloudFabric primarily uses BGP-EVPN and proprietary protocols, not OpenFlow, which is more associated with other SDN platforms.FALSE.

C. Hosting:This is true. CloudFabric is suitable for hosting environments, providing multi-tenant network services.TRUE.

D. Cloud-network integration:This is true. It integrates with cloud platforms (e.g., OpenStack) for unified management.TRUE.

E. Computing:This is false. While it supports computing resources, “computing” is not a primary scenario; it’s an enabler (e.g., server connectivity).FALSE.

Thus,A, C, and Dare application scenarios.References:Huawei CloudFabric Data Center Network Solution – Use Cases; HCIP-Data Center Network Training – Application Scenarios.

In Huawei’s CloudFabric Solution, the underlay network provides the physical infrastructure for VXLAN overlays. Both OSPF (Open Shortest Path First) and BGP (Border Gateway Protocol) are supported routing protocols:

OSPF:Suitable for smaller to medium-sized DCNs, offering fast convergence and simplicity.

BGP:Preferred for large-scale DCNs, providing scalability and multi-tenancy support (e.g., EBGP for inter-AS or iBGP for intra-DC).

Huawei documentation confirms flexibility in choosing OSPF or BGP based on network size and requirements. The statement isTRUE (A).References:Huawei CloudFabric Data Center Network Solution – Underlay Protocols; HCIP-Data Center Network Training – Routing Options.

Centralized gateway deployment using BGP EVPN in Huawei’s data center networks (e.g., CloudFabric) involves a gateway handling Layer 3 routing for VXLAN overlays. Let’s evaluate each statement:

A. When configuring a VTEP, you need to create a Layer 2 BD and bind a VNI to the Layer 2 BD:A Bridge Domain (BD) is a Layer 2 broadcast domain in VXLAN, and a Virtual Network Identifier (VNI) is bound to it to segment traffic. This is a standard step when configuring a VXLAN Tunnel Endpoint (VTEP) to map the overlay network.TRUE.

B. A VXLAN tunnel is identified by a pair of VTEP IP addresses and can be established if the local and remote VTEP IP addresses are reachable to each other at Layer 3:VXLAN tunnels are established between VTEPs using their IP addresses as endpoints. Layer 3 reachability (e.g., via underlay routing) is required for tunnel establishment.TRUE.

C. When BGP EVPN is used to dynamically establish a VXLAN tunnel, the local and remote VTEPs first establish a BGP EVPN peer relationship and then exchange BGP EVPN routes to transmit VNI and VTEP IP address information. A VXLAN tunnel is then dynamically established between them:In BGP EVPN, VTEPs establish a BGP peer relationship, exchange routes (e.g., Type 2 for MAC/IP or Type 3 for multicast), and share VNI and VTEP IP details, enabling dynamic tunnel setup.TRUE.

D. When configuring a VTEP, you need to create an EVPN Instance in the Layer 2 BDand configure an RD for the local EVPN instance. You do not need to configure an RT:An EVPN Instance (EVI) is created within a BD, and a Route Distinguisher (RD) is configured to make routes unique. However, Route Targets (RTs) are also required to control route import/export between EVPN peers, ensuring proper VNI and route distribution. Stating that RT configuration is not needed is incorrect, as RTs are essential for BGP EVPN operation.FALSE.

Thus,Dis the false statement because RT configuration is necessary in centralized gateway deployment with BGP EVPN.References:Huawei CloudFabric Data Center Network Solution – BGP EVPN Configuration; HCIP-Data Center Network Training – EVPN Gateway Deployment.

In Huawei’s M-LAG (Multi-Chassis Link Aggregation), the heartbeat link (or peer-link) ensures communication between member devices. A fault in this link can impact M-LAG operation. Let’s evaluate each statement:

A. The fault that two master devices exist cannot be detected in the case of a peer-link fault:This is false. A peer-link fault can be detected, and mechanisms like dual-master detection (e.g., via Inter-Chassis Communication Link or ICC) can identify if both devices assume master roles, triggering corrective actions.FALSE.

B. An alarm is triggered:This is true. A peer-link fault generates an alarm to notify administrators, as it’s a critical failure in M-LAG operation, per Huawei’s fault management system.TRUE.

C. The fault protection mechanism is triggered:This is true. Huawei M-LAG includes protection mechanisms (e.g., failover to backup links or shutdown of conflicting interfaces) to mitigate peer-link faults and maintain service continuity.TRUE.

D. Services are affected:This is false. With proper configuration (e.g., redundant links or fast failover), services should not be affected by a peer-link fault, as M-LAG is designed for high availability. Impact depends on redundancy, but the design goal is uninterrupted service.FALSE.

Thus,A and Dare false statements because dual-master faults can be detected, and services are not necessarily affected with adequate redundancy.References:Huawei CloudEngine Series Switch Configuration Guide – M-LAG Fault Handling; HCIP-Data Center Network Training – M-LAG Reliability.

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.

VXLAN (Virtual Extensible LAN) tunnels are used to encapsulate Layer 2 traffic over a Layer 3 network, a key component in Huawei’s CloudFabric data center solutions. Let’s evaluate each statement:

A. A VXLAN tunnel is identified by a pair of VTEPs:This is true. A VXLAN tunnel is identified by the pair of VXLAN Tunnel Endpoint (VTEP) IP addresses (local and remote), along with the VNI (VXLAN Network Identifier). This ensures unique tunnel identification.TRUE.

B. After a tunnel is established, if one end of the tunnel goes Down, the other end may not go Down:This is true. VXLAN tunnels are unidirectional, and the status of one end does not automatically affect the other unless the underlay network connectivity (e.g., Layer 3 reachability) is lost. The remote VTEP may remain operational if it can still encapsulate/decapsulate traffic.TRUE.

C. For a static tunnel, you need to manually configure the local and remote VNIs:This is true. In a static VXLAN tunnel, administrators must manually configure the VNI and VTEP IP addresses on both ends, as there is no dynamic control plane (e.g., BGP EVPN) to automate the process.TRUE.

D. Dynamic tunnels depend on EVPN Type 5 routes to transmit information:This is false. Dynamic VXLAN tunnels rely on BGP EVPN as the control plane, but Type 5 routes (IP Prefix routes) are specifically used for advertising host IP routes and external network routes, not for general tunnel establishment. Dynamic tunnel setup primarily uses Type 2 (MAC/IP Advertisement) and Type 3 (Multicast) routes to exchange VNI and VTEP information. Type 5 routes are relevant for Layer 3 routing, not the initial tunnel setup.FALSE.

Thus,Dis the false statement because dynamic tunnels depend on EVPN Type 2 and Type 3 routes, not Type 5, for initial establishment.References:Huawei CloudFabric Data Center Network Solution – VXLAN Configuration Guide; HCIP-Data Center Network Training – VXLAN Tunneling.

In a network overlay, VXLAN (Virtual Extensible LAN) tunnels extend Layer 2 networks over a Layer 3 underlay, commonly implemented in Huawei’s data center solutions. The endpoints of a VXLAN tunnel are VXLAN Tunnel Endpoints (VTEPs), which encapsulate and decapsulate traffic.

VTEP Roles:VTEPs can be physical switches (e.g., Huawei CloudEngine series), virtual switches (e.g., Open vSwitch on a hypervisor), or routers with VXLAN support. The endpoints are defined by their IP addresses, not their physical nature.

Deployment Flexibility:In modern data centers, VXLAN tunnels often connect physical switches to virtualized environments where VTEPs reside on hypervisors or servers hosting VMs. For example, a VM’s vNIC might connect to a virtual switch (VTEP) that tunnels to a physical switch VTEP. Thus, both endpoints are not always physical switches; one or both can be virtual.

The statement isFALSE (B)because both endpoints of a VXLAN tunnel are not necessarily physical switches; they can include virtual VTEPs in hypervisors or other devices.References:Huawei HCIP-Data Center Network Training – VXLAN Overlay; CloudFabric VXLAN Deployment Guide.

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 supportsfour 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 isB (4).References:Huawei CloudFabric Data Center Network Solution – iMaster NCE-Fabric Features; HCIP-Data Center Network Training – SDN Controller Management.

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 isTRUE (A)because the border leaf and service leaf roles can be deployed on the same device in a spine-leaf architecture.References:Huawei CloudFabric Data Center Network Solution – Spine-Leaf Design; HCIP-Data Center Network Training – Leaf Node Roles.

A hypervisor is a software layer that creates and manages virtual machines (VMs) by abstracting physical resources from the underlying hardware. The question specifies that the hypervisor virtualizes "memory" and "input/output (I/O) resources," and the task is to provide the missing resource acronym in uppercase letters. In virtualization contexts, including Huawei’s FusionCompute or OpenStack with KVM, the primary physical resources virtualized by a hypervisor are:

CPU:The central processing unit (CPU) is virtualized to allocate processing power to VMs, enabling multi-tenancy and workload isolation.

Memory:Virtualized to provide RAM allocation to VMs, abstracted via memory management units (MMUs).

I/O Resources:Input/output resources (e.g., NICs, disks) are virtualized to allow VMs to communicate and store data, often through virtual NICs (vNICs) or virtual disks.

The question lists "memory" and "I/O resources" explicitly, implying the missing resource is CPU, as it completes the standard triad of virtualized resources in hypervisor design. Thus, the answer isCPU.References:Huawei HCIP-Data Center Network Training – Virtualization Fundamentals; FusionCompute Architecture Guide.