Resource Pools allow administrators to group virtual machines and apply specific CPU and memory resource constraints, helping ensure certain performance levels or service quality for different workloads.

vLCM can update host firmware (A) when hardware is supported, and it can apply images/baselines (C).
Migrating VMs between vCenters (B) and creating performance alerts for VMs (D) are not within vLCM's scope.

A hypervisor is responsible for creating and managing virtual hardware for multiple virtual machines, allowing each VM to share the host's physical resources securely and efficiently.

You extract a host profile from the reference host that has the desired configuration.
Before extraction, you configure the reference ESXi host with the settings you want standardized. You attach the extracted host profile to all other hosts in the cluster to enforce a consistent configuration.

Enhanced Linked Mode (A) consolidates management. Inter-site bandwidth and low latency (C) are essential for replication and data synchronization, and consistent SSO domain settings (D) avoid authentication conflicts. Using only 2 vCPUs (B) can severely limit performance in medium-to-large environments.