H13-511_V5.5 Exam Dumps - HCIA-Cloud Computing V5.5 Exam

In FusionAccess architecture:

HDC (Huawei Desktop Controller) is responsible for desktop lifecycle management, including provisioning logic, policy enforcement, and resource validation.

During VM creation, HDC verifies whether the specified VM group and desktop group exist and whether configurations are valid.

Other components:

GaussDB stores metadata.

HDA runs inside desktops.

HDP is a display protocol.

Thus, the correct answer is HDC.

According to the Huawei HCIA-Cloud Computing technical manual, the statement is TRUE. A Virtual Local Area Network (VLAN) is a technology used at the Data Link Layer (Layer 2) to partition a physical switch or a network into multiple logical segments. In a traditional local area network, all devices connected to the same set of switches belong to a single broadcast domain. This means that any broadcast packet (such as an ARP request) is sent to every single port, which can lead to "broadcast storms" and security vulnerabilities as the network scales.

VLAN technology solves this by logically dividing the physical infrastructure. Each VLAN acts as its own independent broadcast domain. Even if two hosts are physically plugged into the same switch, if they belong to different VLANs (e.g., VLAN 10 and VLAN 20), they cannot communicate directly at Layer 2. A broadcast sent by a host in VLAN 10 will only be received by other hosts in VLAN 10. This isolation provides two major benefits in a cloud environment:SecurityandEfficiency. Security is enhanced because traffic from one department or tenant is logically separated from others, preventing unauthorized sniffing. Efficiency is improved by reducing unnecessary broadcast traffic, which preserves bandwidth and CPU cycles on the connected hosts.

In Huawei’s virtualization platform,FusionCompute, VLANs are a critical component of "Distributed Virtual Switches" (DVS). When administrators create port groups for Virtual Machines, they often assign a VLAN ID to that group. This ensures that the virtual machines are logically placed in the correct network segment. For hosts in different VLANs to communicate, a Layer 3 device (like a router or a Layer 3 switch) must perform "inter-VLAN routing." This strict separation at the logical level is what allows cloud providers to host multiple tenants on shared physical hardware securely.

====================

In the official Huawei ICT Academy curriculum, virtualization is defined as the core enabling technology that transforms physical hardware into logical, manageable resources. This process involves the introduction of a virtualization layer, often referred to as a Hypervisor or Virtual Machine Monitor (VMM), which sits between the physical hardware and the operating systems. The statement is TRUE because it accurately captures the three primary characteristics of virtualization as defined in Huawei’s technical documentation: Simulation, Isolation, and Sharing.

Simulationrefers to the ability of the Hypervisor to present a consistent set of virtual hardware (CPU, Memory, I/O) to the Guest Operating System, regardless of the underlying physical vendor. This allows software to run in an environment it perceives as dedicated physical hardware.Isolationis a critical security and stability feature; it ensures that if one Virtual Machine (VM) crashes or is compromised, it does not affect the operation of other VMs on the same physical host. Each VM operates in its own logical container with dedicated boundaries. Finally,Sharingallows multiple VMs to occupy a single physical server simultaneously, maximizing resource utilization.

Before virtualization, the "one-server-one-application" model led to massive resource wastage (often using only 5%–15% of capacity). By creating alogical representationof physical resources, virtualization enablesCloud Computingto achieve its goal of multi-tenancy and elastic scaling. In Huawei’sFusionComputearchitecture, this is implemented through theCNA (Computing Node Agent), which uses the Galax88 engine to virtualize CPU and memory resources and theVNA (Virtual Node Agent)for management, effectively decoupling the software from the hardware constraints.

In Linux-based virtualization environments, aTAP deviceis a software-based virtual network interface that operates atLayer 2of the OSI model.

TAP devices are independently maintained by the Linux kernel and are commonly used to connect virtual machines to virtual switches or bridges. They simulate physical Ethernet interfaces, allowing VMs to send and receive Ethernet frames.

This definition aligns with HCIA–Cloud Computing networking fundamentals, so the statement isTRUE.

Bare VM creation rules in FusionAccess are strict to ensuretemplate consistency and successful provisioning:

Ais true: The system disk must useCommon configuration mode, not thin provisioning.

Bis true: For linked-clone bare VMs, NICs are addedafter template creation, during desktop provisioning.

Cis false: Bare VMs should usemanagement-plane networking, not user service-plane DVS/port groups.

Dis false: Thin provisioning isnot allowedfor the system disk of a bare VM.

Therefore, the correct answers areA and B.