You have a server named Server1 that runs Windows Server 2012 R2 and is used for testing.
A developer at your company creates and installs an unsigned kernel-mode driver on Server1.
The developer reports that Server1 will no longer start.
You need to ensure that the developer can test the new driver.
The solution must minimize the amount of data loss.
Which Advanced Boot Option should you select?

A.
Disable Driver Signature Enforcement

B.
Disable automatic restart on system failure

C.
Last Know Good Configuration (advanced)

D.
Repair Your Computer

Explanation:
A)
By default, 64-bit versions of Windows Vista and later versions of Windows will load a kernel- mode driver only if the kernel can verify the driver signature.
However, this default behavior can be disabled to facilitate early driver development and non-automated testing.
B)
specifies that Windows automatically restarts your computer when a failure occurs
C)
Developer would not be able to test the driver as needed
D)
Removes or repairs critical windows files, Developer would not be able to test the driver as needed and some file loss
http://technet.microsoft.com/en-us/library/jj134246.aspx
http://msdn.microsoft.com/en-us/library/windows/hardware/ff547565(v=vs.85).aspx