I currently work as an IT Auditor in a financial institution.  I'm a CISA and my areas of interest are databases, os security, network security and data analytics.

Also, I must apologise in advance if my question smay sometime feel ill formulated.   I have to work with many different environments with different jargon.

I get ask often: "Why do you want to know that?" Well, if nobody knows, isn't that a risk in it self...?

Here's a sample of what I have to work with:
z/OS
ACF2
AS/400
Windows 2000/2003
SQL Sever 2005
Red Hat
AIX
PeopleSoft
WebSphere
and a bunch of homemade applications.