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Huawei H12-893_V1.0 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Data Center Network Operation and Maintenance	25%	- Automated O&M and programmability - Intelligent O&M solutions 1. iMaster NCE-FabricInsight 2. iMaster NCE-Fabric - Monitoring and troubleshooting
Topic 2: Virtualization Technology Principles and Applications	20%	- Server and network virtualization basics - Huawei FusionCompute platform 1. Features and functions 2. Application scenarios
Topic 3: Data Center Network Planning and Deployment	30%	- Security and management design - CloudFabric solution architecture 1. Underlay network design 2. Overlay network design - Network deployment and provisioning 1. Service provisioning process 2. Pre-deployment configuration
Topic 4: VXLAN Technology Principles and Applications	25%	- VXLAN deployment and configuration - VXLAN fundamentals and evolution - EVPN control plane technology

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H12-893_V1.0 Testfagen - H12-893_V1.0 Prüfungsvorbereitung

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Huawei HCIP-Data Center Network V1.0 H12-893_V1.0 Prüfungsfragen mit Lösungen (Q19-Q24):

19. Frage
During deployment of an EVPN VXLAN fabric, the operations team wants remote VTEPs to discover BUM replication information without using multicast routing. Which EVPN route type distributes this information between participating VTEPs?

A. Type 5
B. Type 1
C. Type 2
D. Type 3

Antwort: D

Begründung:
Type 3 Inclusive Multicast Ethernet Tag routes advertise VTEP participation for BUM traffic handling. They allow ingress replication without relying on an underlay multicast network. Type 2 advertises endpoint information, while Types 1 and 5 serve different EVPN purposes.

20. Frage
Which of the following statements is false about VM service traffic in the computing scenario?

A. Traffic inside a fabric is VXLAN encapsulated.
B. Inter-VPC traffic must pass through the firewall.
C. Traffic between vSwitches on virtual servers and server leaf nodes is VLAN encapsulated.
D. Traffic between VAS devices and service leaf nodes is VLAN encapsulated.

Antwort: B

Begründung:
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, B is the false statement because inter-VPC traffic does not always require a firewall.

21. Frage
Which of the following statements are true about a routing design that employs OSPF on the underlay network of a DC? (Select All that Apply)

A. It is recommended that all devices be planned in Area 0.
B. This routing design is recommended when the DC has more than 300 switches.
C. The network type of spine and leaf nodes can be set to P2P in order to accelerate convergence.
D. Typically, the IP address of Loopback0 is configured as the VTEP IP address and the same IP address is planned for active-active leaf nodes in the same group.

Antwort: C,D

Begründung:
OSPF (Open Shortest Path First) is a routing protocol used in the underlay network of Huawei's CloudFabric DCNs. Let's evaluate each statement:
A). Typically, the IP address of Loopback0 is configured as the VTEP IP address and the same IP address is planned for active-active leaf nodes in the same group: This is true. Loopback0 IP is commonly used as the VTEP IP for stability, and in active-active leaf node groups (e.g., M-LAG), the same IP can be configured with VRRP or anycast to ensure consistency. TRUE.
B). The network type of spine and leaf nodes can be set to P2P in order to accelerate convergence: This is true. Setting OSPF network type to Point-to-Point (P2P) on spine-leaf links reduces overhead (e.g., no DR/BDR election) and speeds up convergence, a recommended practice in Huawei DCNs. TRUE.
C). This routing design is recommended when the DC has more than 300 switches: This is false.
OSPF is suitable for smaller to medium-sized DCNs (e.g., up to 200-300 switches). For larger networks (>300 switches), EBGP is preferred due to better scalability and reduced complexity.
FALSE.
D). It is recommended that all devices be planned in Area 0: This is false. While a single Area 0 is possible for small DCNs, multi-area OSPF is recommended for larger networks to manage scalability and reduce routing table size, avoiding a flat Area 0 design. FALSE.
Thus, A and B are true statements about OSPF routing design in a DC underlay.

22. Frage
An administrator notices that unknown unicast traffic has increased after adding several new hosts. Which EVPN mechanism most directly reduces this unnecessary flooding?

A. VRRP preemption
B. MAC learning through EVPN advertisements
C. Port mirroring
D. DHCP Snooping

Antwort: B

Begründung:
EVPN distributes endpoint MAC information using BGP, enabling remote VTEPs to forward traffic directly without relying on flooding. This significantly decreases unknown unicast traffic compared with traditional data center switching.

23. Frage
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?

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

Antwort: B

Begründung:
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.

24. Frage
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