HCIA Cloud Computing Practice Test

The Distributed Virtual Switch (DVS) in Huawei FusionCompute is designed to manage and connect virtual network interfaces across multiple hosts seamlessly. It acts as a virtual switch that spans the entire virtual infrastructure, enabling consistent network policies and configurations regardless of the underlying physical hardware.

The correct association with a Layer 2 switch is due to the functionality that a DVS provides, primarily operating at the data link layer (Layer 2) of the OSI model. Layer 2 switches manage traffic within a local network by forwarding data based on MAC addresses and do not require any routing protocols or IP addresses to function effectively. The DVS emulates this behavior in a virtualized environment by allowing virtual machines on different physical hosts to communicate as if they are on the same physical switch, facilitating virtual machine mobility and efficient traffic management.

In contrast, equipment like routers or Layer 3 switches operate at Layer 3, managing traffic between different networks and handling IP routing. Hubs do not offer the intelligent switching capabilities that DVS and Layer 2 switches provide. Therefore, the correct match for the functionality of a Distributed Virtual Switch is most accurately aligned with a Layer 2 switch.