Ompare and Contrast the LINUX operating System with that of Windows Vista

Compare and Contrast the LINUX operating System with that of Windows Vista.

Include the following:
1. What are the commonalities of general purpose operating systems?
2. How do each (LINUX and Windows Vista) handle authentication?
3. Include brief definitions of: BIOS, kernel, real-time systems, and multitasking.
4. What types of environments are best for each (LINUX and Windows Vista) of the operating systems you compared?

It has to be in APA format. Be sure to include both intext citations and a refrence page.

Has to be 5 6 pages (double-spaced)