What should be installed on a VM to assist with VM-to-host time synchronization?

What could cause a high %RDY value?

Which two software packages are included in vCenter Server Appliance? (Choose two.)

A cluster contains database VMs which have low utilization, except during a weekly data load that causes extremely high utilization.
As DRS balances the VM load, there is an extended period of slow performance.
Which two actions could be taken to reduce the impact of the recurring data load? (Choose two.)

Which condition would prevent a vSphere Administrator from increasing the vCPU on a virtual machine to 128 vCPUs?