Use the Internet or other resources to find out:
What is the latest mobile version of Windows?
What versions of UNIX / Linux are currently available for PCs?
Current versions include Windows Mobile 5.0, Solaris 10, Red Hat Enterprise Linux and SUSE Professional 9.3.
However, similar to hardware, operating systems change and are updated quite frequently.
Next: Activity 2.2
(c) 2010 Scottish Qualifications Authority. Last amended 21/03/2010.