Chapter 3 Operating Systems and Software COmpTIA A+ ESSEnTIAlS ExAm ObjECTIvES COvErEd In ThIS ChApTEr: Û Û 3.1 Compare and contrast the different Windows Operating Systems and their features N Û Windows 2000, Windows XP 32bit vs. 64bit, Windows Vista 32bit vs. 64bit N Û Side bar, Aero, UAC, minimum system requirements, system limits Windows 2000 and newer ­ upgrade paths and N Û