H12-921_V1.0 Exam Preparation Material | HCIE-Data Center Network (Written) V1.0

Explanation:
Analysis: Seco-manager is a security controller that can only manage Huawei devices. Therefore, Huawei's FW can only be managed by SECO-Manager.

Explanation:
Analysis: The service simulation function in iMaster NCE-Fabric provides functions such as pre-verification, simulation, and resource consumption budget for service delivery, helping you determine whether the current service orchestration can achieve the expected results, whether it will affect other existing services, and how much equipment resources are expected to consume. iMaster NCE-Fabric enables the design mode for a tenant
Administrators can orchestrate VPC services and cross-VPC intercommunication services to which tenants belong. The changes made in the design state will not be directly delivered to the device, but will be superimposed on the existing configuration and the new configuration through the simulation engine for simulation modeling and analysis. In the simulation, you can directly view the devices to which the services to be deployed will be delivered, and iMaster NCE-Fabric can directly display the resource usage (consumed/consumed/total resources) on each device to avoid service delivery failures or other faults caused by insufficient network device resources. At the same time, you can preview which specific configuration commands will be delivered to the device before the network configuration is delivered to the device. During the simulation, you can check the service connectivity to see if the service connectivity meets expectations. In the simulation, you can perform a network-wide impact analysis of the tenant network to preview whether the reachability of IP flows has changed before and after the configuration change, so as to further confirm whether the configuration is correct.
• Design state and production state description: Design state: The process of VPC service orchestration and simulation verification in the "Business Simulation APP" is called design state. Business orchestration in the design state.
It is delivered to the design state database and not to the real device. After the user clicks Submit, the data will be submitted to the production state and delivered to the device. Production state: The process of orchestrating VPC services and delivering devices in the Service Provisioning App is called production mode. Business orchestration in the production mode is delivered to the real physical device.

Explanation:
Analysis: Option A is incorrect, and the BD information exists only in Huawei switches and cannot appear in vxlan packets.
Option B. Option B is incorrect, under the service access mode of the L2 sub-interface
There is a 1: n relationship between the BD and the VLAN, and the BD and the VLAN are in the VLAN service access mode 1:1 relationship.
Option D is not right, each bd can have its own vbdif, there is no sharing.

Explanation:
Resolution: A or B are two priority identities that can be trusted and queued for either of them. Option C is a best practice and is designed non-destructively for RoCE traffic alone. Priority scheduling is based on the outer priority identifier of the tunnel protocol. The vxlan protocol is no exception, so D is incorrect.