350-401 · Question #726
What is a characteristics of a vSwitch?
The correct answer is B. enables VMs to communicate with each other within a virtualized server. A vSwitch's primary function is to facilitate network communication between virtual machines (VMs) on the same host and connect them to external networks.
Question
What is a characteristics of a vSwitch?
Options
- Asupports advanced Layer 3 routing protocols that are not offered by a hardware switch
- Benables VMs to communicate with each other within a virtualized server
- Chas higher performance than a hardware switch
- Doperates as a hub and broadcasts the traffic toward all the vPorts
How the community answered
(26 responses)- A4% (1)
- B92% (24)
- D4% (1)
Why each option
A vSwitch's primary function is to facilitate network communication between virtual machines (VMs) on the same host and connect them to external networks.
vSwitches primarily provide Layer 2 functionality; advanced Layer 3 routing protocols are typically handled by virtual routers or firewalls, not the vSwitch itself, and hardware switches also support L3.
A vSwitch, or virtual switch, provides Layer 2 network connectivity for virtual machines, enabling them to communicate with each other within the same virtualized server and with the physical network via the host's physical NICs. It forwards frames based on MAC addresses, similar to a physical switch.
While efficient, a vSwitch generally incurs some hypervisor overhead and does not inherently have higher performance than a dedicated hardware switch for high-throughput scenarios.
A vSwitch operates like a traditional hardware switch, using MAC address tables to forward traffic intelligently to specific vPorts, not broadcasting to all ports like a hub.
Concept tested: Virtual switch functionality
Source: https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/manage/create-virtual-switches
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