Which two vSphere features enable remote site availability? (Choose two.)

An administrator runs third-party software in a virtual machine (VM). The third-party licensing agreement requires payment of a license fee for each host to which the VM migrates.
How can the administrator configure Distributed Resource Scheduler (DRS) to minimize licensing costs?
(Choose the best answer.)

A virtual machine with a single 100 GB virtual machine disk file has a single 20 GB snapshot. The virtual machine is powered off.
How much additional free space on the datastore is required to delete the snapshot, committing the snapshot delta disk to the base disk? (Choose the best answer.)

ESXi provides VLAN support by assigning a VLAN ID to which component? (Choose the best answer.)

Which type of network adapter is designed to provide connectivity to hosts and handle the standard system traffic of vSphere vMotion?