Your network contains an Active Directory forest named adatum.com. The forest contains a child domain named asia.adatum.com. The asia.adatum.com child domain contains a server named DHCP1 that runs Windows Server 2012 R2.
You install the DHCP Server server role on DHCP1.
You have access to the administrative accounts shown in the following table.

You need to authorize DHCP1.
Which user account should you use?（）

You have a server named Server1 that runs Windows Server 2012 R2. Server1 has the Hyper-V server role installed. You have fixed-size VHD named Files.vhd.
You need to make the contents in Files.vhd available to several virtual machines. The solution must meet the following requirements:
Ensure that if the contents are changed on any virtual machine, the changes are not reflected on the other virtual machines.
Minimize the amount of disk space used.
What should you do?（）