There are two types of virtual switches.

DVSAccording to the Huawei HCIA-Cloud Computing curriculum, specifically the "Network Technology Basics" and "FusionCompute Network Virtualization" modules, there are two primary types of virtual switches in a virtualized environment: the standard virtual switch and the Distributed Virtual Switch (DVS). The DVS is the advanced switching model used within Huawei’s FusionCompute to provide a consistent and simplified networking environment for Virtual Machines (VMs) across a cluster of physical hosts.The statement correctly identifies the DVS as the component that can be distributed across multiple physical hosts. In a traditional setup, each host would have its own local virtual switch that must be managed independently, leading to configuration inconsistencies and operational complexity as the data center scales. However, the DVS functions as a single, logical switch that spans all the hosts within a cluster. This allows administrators to perform "unified configuration" from theVRM (Virtual Resource Management)portal. When a port group or a VLAN is configured on a DVS, that configuration is automatically pushed to all theCNA (Computing Node Agent)nodes associated with that switch.This architecture is essential for advanced cloud features likeVM Live Migration. Because the DVS maintains a consistent network state (such as port IDs, VLAN tags, and security policies) across different physical servers, a VM can move from one host to another without losing its network connection or requiring a reconfiguration of its virtual NIC. The DVS effectively decouples the virtual network from the physical network hardware, allowing the logical network to "follow" the VM wherever it goes. In the Huawei ecosystem, the DVS is the cornerstone of Software-Defined Networking (SDN) at the computing layer, ensuring that large-scale virtualized networks are both manageable and resilient.