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| Certification Vendor: | Huawei |
|---|---|
| Exam Name: | Huawei Certified ICT Professional - Data Center Network V1.0 |
| Exam Number: | H12-893_V1.0 |
| Exam Format: | Multiple-choice, Single-choice, True/false, Drag-and-drop |
| Exam Duration: | 90 minutes |
| Related Certifications: | HCIA-Data Center Network HCIE-Data Center Network |
| Real Exam Qty: | 60 |
| Exam Price: | 300 USD |
| Certificate Validity Period: | 3 years |
| Available Languages: | English, Chinese |
| Passing Score: | 600/1000 |
| Recommended Training: | HCIP-Data Center Network V1.0 Official Training |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: | Huawei H12-893_V1.0 Sample Questions |
| Exam Way: | Online or Onsite at Pearson VUE test centers |
| Pre Condition: | Recommended: HCIA-Data Center Network certification or equivalent knowledge |
| Official Syllabus URL: | https://e.huawei.com/en/talent/certification/exam/h12-893_v1.0 |
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NEW QUESTION # 68
Which of the following statements is false about M-LAG deployment?
Answer: D
Explanation:
M-LAG (Multi-Chassis Link Aggregation) on Huawei CE series switches enhances high availability and load balancing by making two switches appear as one. Let's evaluate each statement:
A . Multi-level M-LAG is mainly used to construct a large Layer 2 network in a DCN or directly connect DCNs at Layer 2: This is true. Multi-level M-LAG extends the topology across multiple layers or data centers, facilitating large Layer 2 domains, a common use case in Huawei DCNs. TRUE.
B . In multi-level M-LAG networking, you can manually configure the root bridge to prevent STP loops: This is true. Manual configuration of the root bridge (e.g., using STP priority) is supported to optimize path selection and prevent loops, especially in complex M-LAG setups. TRUE.
C . Multi-level M-LAG must be configured based on V-STP: This is false. While V-STP can be used to prevent loops, M-LAG does not require V-STP specifically. Standard STP, RSTP, or MSTP can also be configured, depending on the network design. The requirement is loop prevention, not a mandatory V-STP dependency. FALSE.
D . M-LAG networking can be classified into single-level M-LAG networking and multi-level M-LAG networking: This is true. Single-level M-LAG connects two switches directly to devices, while multi-level M-LAG extends across additional layers or devices, a recognized classification in Huawei documentation. TRUE.
Thus, C is the false statement because multi-level M-LAG does not mandate V-STP configuration.
NEW QUESTION # 69
The figure shows an incomplete VXLAN packet format.
Which of the following positions should the VXLAN header be inserted into so that the packet format is complete?
Answer: B
Explanation:
VXLAN (Virtual Extensible LAN) is a tunneling protocol that encapsulates Layer 2 Ethernet frames within UDP packets to extend VLANs across Layer 3 networks, commonly used in Huawei's CloudFabric data center solutions. The provided figure illustrates an incomplete VXLAN packet format with the following sequence:
Outer Ethernet Header (Position 1): Encapsulates the packet for transport over the physical network.
Outer IP Header (Position 2): Defines the source and destination IP addresses for the tunnel endpoints.
UDP Header (Position 3): Carries the VXLAN traffic over UDP port 4789.
Inner Ethernet Header (Position 4): The original Layer 2 frame from the VM or endpoint.
Inner IP Header (Position 5): The original IP header of the encapsulated payload.
Payload (Position 6): The data being transported.
The VXLAN header, which includes a 24-bit VXLAN Network Identifier (VNI) to identify the virtual network, must be inserted to complete the encapsulation. In a standard VXLAN packet format:
The VXLAN header follows the UDP header and precedes the inner Ethernet header. This is because the VXLAN header is part of the encapsulation layer, providing the VNI to map the inner frame to the correct overlay network.
The sequence is: Outer Ethernet Header → Outer IP Header → UDP Header → VXLAN Header → Inner Ethernet Header → Inner IP Header → Payload.
In the figure, the positions are numbered as follows:
1: Outer Ethernet Header
2: Outer IP Header
3: UDP Header
4: Inner Ethernet Header
The VXLAN header should be inserted after the UDP header (Position 3) and before the Inner Ethernet Header (Position 4). However, the question asks for the position where the VXLAN header should be "inserted into," implying the point of insertion relative to the existing headers. Since the inner Ethernet header (Position 4) is where the encapsulated data begins, the VXLAN header must be placed just before it, which corresponds to inserting it at the transition from the UDP header to the inner headers. Thus, the correct position is D (2) if interpreted as the logical insertion point after the UDP header, but based on the numbering, it aligns with the need to place it before Position 4. Correcting for the figure's intent, the VXLAN header insertion logically occurs at the boundary before Position 4, but the options suggest a mislabeling. Given standard VXLAN documentation, the VXLAN header follows UDP (Position 3), and the closest insertion point before the inner headers is misinterpreted in numbering. Re-evaluating the figure, Position 2 (after Outer IP Header) is incorrect, and Position 3 (after UDP) is not listed separately. The correct technical insertion is after UDP, but the best fit per options is D (2) as a misnumbered reference to the UDP-to-inner transition. However, standard correction yields after UDP (not directly an option), but strictly, it's after 3. Given options, D (2) is the intended answer based on misaligned numbering.
Corrected answer: After re-evaluating the standard VXLAN packet structure and the figure's
NEW QUESTION # 70
Why is MP-BGP preferred as the EVPN control plane instead of relying solely on traditional flood- and-learn behavior?
Answer: B
Explanation:
MP-BGP proactively distributes endpoint reachability information, significantly reducing unknown unicast flooding. Control-plane learning provides better scalability, faster convergence, and improved operational visibility compared with data-plane flood-and-learn mechanisms.
NEW QUESTION # 71
An engineer wants automatic detection of failed links while maintaining rapid convergence in the underlay network. Which protocol is commonly paired with routing protocols for this purpose?
Answer: C
Explanation:
Bidirectional Forwarding Detection rapidly identifies forwarding failures and notifies routing protocols, enabling much faster convergence than relying solely on routing protocol timers. FTP, SNMP, and NTP serve unrelated management functions.
NEW QUESTION # 72
In which of the following phases can CloudFabric implement full-lifecycle automatic network management and control? (Select All that Apply)
Answer: A,B,C,D
Explanation:
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, policy adjustments, and optimization based on analytics, covering the change management phase.
TRUE.
All phases A, B, C, and D are supported by CloudFabric's full-lifecycle automation.
NEW QUESTION # 73
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