What can be configured to improve network performance in a virtual environment?

Configuring VLANs to isolate network traffic is a highly effective way to improve network performance in a virtual environment. VLANs, or Virtual Local Area Networks, allow you to segment network traffic based on functional groups or business requirements rather than purely physical topology. This segmentation reduces broadcast traffic, isolates broadcast domains, and improves overall network efficiency.

By using VLANs, you can ensure that only relevant traffic is sent to each segment of the network, which minimizes unnecessary congestion and reduces the chance of collisions. This targeted traffic flow means that network resources can be more efficiently utilized, leading to better performance for applications running in the virtual environment.

In contrast, enabling Promiscuous Mode on the virtual switch can lead to increased network overhead, as it allows all traffic to be seen by all virtual machines (VMs), which can negatively impact performance. Limiting the number of VMs on each host might help alleviate contention for resources but does not specifically optimize network traffic. Disabling resource pools can hinder resource management and allocation, which could have adverse effects on overall performance. Therefore, configuring VLANs for traffic isolation is a strategic approach to enhance the performance of the network in virtual environments.