Which Nutanix feature allows for a Less than 60 minutes RPO and leverages light weight snapshots (LWS)?

An administrator has a cluster in a secure environment. The administrator wants to disable password authentication over SSH to access the cluster.
Which configure should the administrator use to disable password authentication over SSH?

A customer wants to isolate a group of VMs within their Nutanix environment for security reasons. The customer creates a VM with two NICs to act as a firewall and installs the appropriate software and certificates.
However, no one from the outside can access the application.
What is the likely cause of this problem?

A guest VM should be able to tolerate simultaneous failure of two nodes or drives.
What are the minimum requirements for the Nutanix cluster?

What is Prism Central primarily used for?