In compute virtualization, which of the following is the operating system running on a virtual machine (VM)?
Answer(s): C
Comprehensive and Detailed Explanation (HCIACloud Computing aligned):The HCIACloud Computing syllabus defines clear terminology for virtualization components.The Guest OS is the operating system installed and running inside a virtual machine. It operates as if it were running on physical hardware, but all hardware access is abstracted by the hypervisor.The hypervisor (A) is the virtualization layer that manages physical resources and virtual machines.The host OS (B) is the operating system running on the physical server (in hosted virtualization models).The host machine (D) refers to the physical server itself.Therefore, the correct answer is Guest OS.
Which of the following statements is false about High Availability (HA) in Huawei FusionCompute?
Answer(s): B
Comprehensive and Detailed Explanation (HCIACloud Computing aligned):Huawei FusionCompute High Availability (HA) is designed to improve service continuity by automatically responding to VM or host failures.Option A is true. FusionCompute allows administrators to configure different HA policies for virtual machines based on service importance, which aligns with SLA-driven management principles.Option C is true. One of the core functions of HA is automatic VM reboot when a virtual machine encounters a failure, ensuring rapid service recovery.Option D is true. FusionCompute continuously monitors CNA host and VM status. If a CNA host fails, HA triggers VM migration or restart on another available host in the same cluster, minimizing downtime.Option B is false. Even when using shared storage, HA does not guarantee zero data loss. HA focuses on service recovery, not data consistency. Data loss may still occur depending on application state and write operations at the time of failure.Therefore, the false statement is B.
FusionCompute adopts hardware-assisted virtualization technology to reduce memory virtualization overhead.
Answer(s): A
Comprehensive and Detailed Explanation (HCIACloud Computing aligned):Huawei FusionCompute leverages hardware-assisted virtualization technologies such as Intel VT-x, EPT, and AMD-V, which significantly reduce the overhead associated with CPU and memory virtualization.Memory virtualization traditionally involved complex software-based address translation, which introduced performance overhead. With hardware-assisted features such as Extended Page Tables (EPT), memory mapping is handled directly by the CPU, improving efficiency and performance.This approach is explicitly highlighted in HCIACloud Computing materials as a key reason why FusionCompute delivers near-native performance for virtual machines.Therefore, the statement is TRUE.
In Huawei FusionCompute, a virtual machine running Linux is created. In this scenario, which of the following does the host OS run in?
Answer(s): D
Comprehensive and Detailed Explanation (HCIACloud Computing aligned):In FusionCompute architecture, the host OS refers to the operating system running on the physical compute node.The Compute Node Agent (CNA) is the component deployed on the physical server. It integrates the host operating system and hypervisor, directly managing hardware resources and providing virtualization services.Linux VM (A) refers to the guest OS running inside a virtual machine.VRM (B) is the centralized management component.VNA (C) is responsible for virtual networking services.Therefore, the host OS runs within the CNA, making D the correct answer.
In FusionCompute, the security auditor in role-based access control (RBAC) mode is only permitted to view and export logs.
Comprehensive and Detailed Explanation (HCIACloud Computing aligned):Huawei FusionCompute implements role-based access control (RBAC) to ensure secure and compliant system management.The security auditor role is designed specifically for compliance and auditing purposes. According to HCIACloud Computing materials, this role has read-only permissions, allowing the user to view and export system logs but not modify configurations or perform operational tasks.This restriction helps ensure the integrity of audit records and prevents unauthorized system changes.Therefore, the statement is TRUE.
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