Which of the following is used to distribute workloads across multiple physical devices?

The correct answer is DRS, which stands for Distributed Resource Scheduler. DRS is specifically designed to manage workloads across multiple physical devices or servers in a cloud or virtualized environment. Its primary function is to optimize resource allocation, load balancing, and performance by automatically distributing workloads according to predefined policies and real-time metrics. This ensures that no single device becomes a bottleneck due to overloaded resources, enhancing overall system efficiency and user experience.

In contrast to DRS, clustering refers to the configuration of multiple servers working together to provide high availability and redundancy, rather than specifically managing workload distribution. DNS, or Domain Name System, is a naming system for computers, services, or other resources connected to the internet or a private network, primarily focused on translating human-friendly domain names to IP addresses. DO, which may refer to DigitalOcean, typically relates to specific cloud service offerings rather than a method of workload distribution. Therefore, DRS is the most appropriate choice for the requirement of distributing workloads across multiple physical devices.