Why would a vSphere administrator configure resource shares for a virtual machine?

An administrator has created a Virtual Flash Read Cache and needs to add a total 2TB of
capacity to the cache. The administrator has a total of six SSD disks to add, but is unable to
add one of the disks. What is a likely cause of the problem?

An administrator is deploying vSphere using a NAS device as the shared storage system.
The administrator has already created a VMkernel port, enabled the NFS client, and
configured a mount point accessible to the hosts. Which additional configuration is required
before the datastore can be used to create virtual machines?

An administrator determines that a vSphere Standard Switch is dropping all inbound frames
to a specific virtual machine. The behavior appeared in the last two days. Which
configuration was likely changed in the last two days?

A vSphere administrator has configured a virtual machine alarm to trigger a warning when
the condition Snapshot Size exceeds 1GB. Which action should the administrator configure
on the alarm to automatically resolve the condition?

Which configuration will block communication between two virtual machines on the same
DMZ network?

An administrator needs to migrate a virtual machine from one datastore to another, but the
virtual machine has a snapshot. The virtual machine is running on an ESXi 5.x host. Which
action must the vSphere administrator take to ensure that the snapshot data remains intact?