H12-893_V1.0 Exam Dumps - HCIP-Data Center Network V1.0

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.

In Huawei’s CloudFabric computing scenario, VM service traffic involves virtualized environments with VXLAN overlays and traditional VLANs. Let’s evaluate each statement:

A. Traffic inside a fabric is VXLAN encapsulated:This is true. Within a CloudFabric network, VXLAN encapsulation is used to transport traffic across the fabric, enabling overlay networking for VMs.TRUE.

B. Inter-VPC traffic must pass through the firewall:This is false. Inter-VPC (Virtual Private Cloud) traffic can be routed directly between VPCs using a gateway or router (e.g., with EVPN Type 5 routes) without necessarily passing through a firewall, depending on security policies. Firewalls are optional for inter-VPC traffic, not mandatory.FALSE.

C. Traffic between VAS devices and service leaf nodes is VLAN encapsulated:This is true. Value-Added Services (VAS) devices (e.g., load balancers) often connect to service leaf nodes using VLAN encapsulation, especially in traditional or hybrid deployments.TRUE.

D. Traffic between vSwitches on virtual servers and server leaf nodes is VLAN encapsulated:This is true. Traffic from virtual switches (vSwitches) on hypervisors to physical server leaf nodes typically uses VLAN encapsulation over the physical NICs, before VXLAN overlay if applicable.TRUE.

Thus,Bis the false statement because inter-VPC traffic does not always require a firewall.References:Huawei CloudFabric Data Center Network Solution – Traffic Engineering; HCIP-Data Center Network Training – VM Traffic.

IP address planning is critical in Huawei’s CloudFabric data center networks to ensure scalability and efficiency. Let’s evaluate each statement:

A. Service addresses refer to the IP addresses of servers, hosts, and gateways:This is true. Service addresses are assigned to endpoints (servers, hosts) and gateways, distinguishing them from management or interconnection IPs in DC planning.TRUE.

B. IP addresses with a 24-bit mask are recommended for use as interconnection IP addresses:This is false. A 24-bit mask (/24) is typically used for service subnets, while interconnection IPs (e.g., between spine and leaf) often use smaller masks (e.g., /31 or /30) to conserve addresses and align with point-to-point links.FALSE.

C. IP addresses must be contiguous. The routes with contiguous IP addresses can be summarized easily on a hierarchical network:This is false. Contiguity is desirable for summarization but not mandatory; non-contiguous blocks can still be managed with proper routing design (e.g., using BGP).FALSE.

D. IP address allocation should be simple and easy to manage, reflect network layers, and simplify network management and network expansion:This is true. Huawei recommends structured allocation (e.g., by layer or function) to streamline management and support future growth.TRUE.

Thus,A and Dare true statements about IP address planning.References:Huawei CloudFabric Data Center Network Solution – IP Planning; HCIP-Data Center Network Training – Address Management.

BGP EVPN (Ethernet VPN) extends BGP to provide control plane functionality for VXLAN overlays, including in Huawei’s data center networks. EVPN defines several route types to advertise different types of information:

Type 1:Auto-discovery routes for EVPN instances.

Type 2:MAC/IP Advertisement routes for host reachability.

Type 3:Inclusive Multicast Ethernet Tag routes for multicast traffic.

Type 4:Ethernet Segment routes for multi-homing.

Type 5:IP Prefix routes for advertising host IP routes and external network routes, enabling inter-subnet and external connectivity.

The question specifies routes used to advertise "host IP routes and external network routes," which aligns withType 5routes. These routes carry IP prefix information and a Layer 3 VNI, facilitating Layer 3 routing within the EVPN domain or to external networks. Thus, the answer is5.References:Huawei HCIP-Data Center Network Training – BGP EVPN Routes; CloudFabric EVPN Configuration Guide.

TheEasy modein Huawei’s iMaster NCE-Fabric simplifies VXLAN fabric deployment with automated configuration. Certain pre-deployment steps are required. Let’s evaluate each option:

A. Disable data synchronization upon going online for the first time:This is false. Data synchronization is typically enabled by default to ensure consistency; disabling it is not a standard pre-deployment step and is optional based on specific needs.FALSE.

B. Load the license:This is true. A valid license must be loaded into iMaster NCE-Fabric before deployment to unlock features, including Easy mode functionality.TRUE.

C. Pre-configure the access ports:This is true. Access ports on devices (e.g., server leaf nodes) need to be pre-configured (e.g., with VLANs or basic settings) to ensure connectivity before Easy mode automation begins.TRUE.

D. Configure an SSH fingerprint verification policy:This is false. SSH fingerprint verification is part of security configuration but is not a mandatory pre-deployment step for Easy mode; it can be set post-deployment or is automated.FALSE.

Thus,B (Load the license) and C (Pre-configure the access ports)are required operations before deployment in Easy mode.References:Huawei CloudFabric Data Center Network Solution – iMaster NCE-Fabric Easy Mode; HCIP-Data Center Network Training – Deployment Preparation.