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The correct answer is D. Resource pool and basic cloud service management . Huawei’s official License Guide includes a dedicated section called “Resource Pool & Basic Cloud Services” and explicitly instructs administrators to enter Service OM to perform management actions there. This directly ties Service OM to the management plane for resource pools and basic cloud services , rather than positioning it primarily as a hardware-monitoring tool or a deployment platform.

Huawei Cloud Stack O & M materials also show Service OM being used for operational management tasks such as viewing VMs, host groups, cloud services, and system resource status. In contrast, deployment and upgrade are associated with dedicated installation and upgrade tools, not Service OM as the main function. Similarly, centralized monitoring across products is broader than Service OM’s core purpose and is covered by other monitoring and O & M capabilities in the Huawei Cloud Stack architecture.

Therefore, among the available choices, the description that best matches Huawei’s official positioning of Service OM is resource pool and basic cloud service management . That makes D the most accurate and fully verified answer.

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The statement is TRUE. Huawei Cloud Stack separates management responsibilities between operation administrators and VDC administrators. Huawei’s service-management documentation shows that operation administrators work at the platform-wide level and can publish cloud services and associate them with approval processes, which reflects their broader administrative scope. By contrast, VDC administrators work within the boundary of their own VDC and manage service usage and permissions inside that tenant-like scope. This architecture strongly supports the rule that both roles can participate in approval-process customization, but the visibility scope is different.

In practice, this means an approval process created by an operation administrator can be used as a global process across the platform, while a process created by a VDC administrator is limited to the VDC context rather than being exposed to all tenants or all service domains. This aligns with Huawei Cloud Stack’s layered governance model, where global service governance belongs to operation administrators and tenant-level governance belongs to VDC administrators. Therefore, the correct answer is A (TRUE).

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The correct answer is C. Glance Store . OpenStack’s official Glance architecture documentation states that all image data operations are performed using the glance_store library, and that this library is responsible for interaction with external storage back ends and/or local file systems . The same documentation explains that glance_store provides a uniform interface to access backend stores, which is exactly the function described in the question.

The other options do not match this role. The REST API exposes image service operations to clients, but it does not directly serve as the backend storage interaction layer. The database stores metadata about images, while the actual image binary data is handled through the storage interface. “ Glance Domain Controller ” is not a standard Glance core component in official OpenStack architecture. In Huawei Cloud Stack and OpenStack-based image management, the distinction between image metadata management and image data storage interaction is important, and the storage-facing part is handled by Glance Store . Therefore, the fully verified answer is C .

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The statement is TRUE . In HUAWEI CLOUD Stack, a resource set is a logical grouping of cloud resources under a tenant or VDC for purposes such as authorization, organization, and management. Huawei documentation describes resource sets as being used to classify and manage resources within a tenant context, which means their scope is tied to the tenant’s own resource domain. This is why resource sets are commonly used to separate production, test, departmental, or project resources inside the same tenant or VDC rather than as a cross-tenant migration mechanism. ( )

Operationally, resources can be reassigned or moved between resource sets when administrators need to reorganize management boundaries, but the resource-set model itself is not designed to move resource sets across tenants . Cross-tenant transfer would break the tenant-based isolation and authorization structure that Huawei Cloud Stack uses for cloud governance. This is consistent with Huawei’s hierarchical cloud management approach, where tenants are major security and administration boundaries, while resource sets are subordinate organizational tools. Therefore, the verified answer is A (TRUE) because resource migration between resource sets is allowed within the management domain, but resource sets themselves are not intended for migration across tenants. ( )

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