You have a SharePoint Server 2010 server farm. You need to automatically back up the server farm
every day. What should you do?

A.
From Central Administration, configure the backup settings.

B.
From Central Administration, configure the Backup/Restore timer job definition.

C.
From Windows Task Scheduler, create a task that runs stsadm.exe.

D.
From Windows Task Scheduler, create a task that runs the set-sptimerjob cmdlet.

Explanation:

stsadm.exe is supposed to be deprecated in SharePoint 2010 in favor of using PowerShell cmdlets.
The answer choice should probably be:
From Windows Task Scheduler, create a task that runs the backup-spfarm cmdlet.
SharePoint 2010: STSADM And PowerShell
http://blog.falchionconsulting.com/index.php/2009/10/sharepoint-2010-stsadm-and-powershell/
Back up a farm (SharePoint Foundation 2010)
http://technet.microsoft.com/en-us/library/ee428295.aspx
Automate SharePoint 2010 Farm Backups with Powershell
http://imperfectit.blogspot.com/2010/03/automate-sharepoint-2010-farm-backups.html