The A+ Exams Guide: (Exam 220-301), (Exam 220-302) (TestTakers Guides)

http://www.microsoft.com. The minimum and recommended hardware requirements for Windows NT Server, as well as other Microsoft operating systems, can be found at this Microsoft Web site.

http://www.microsoft.com/whdc/hcl/default.mspx. This Microsoft Web page offers access to the Hardware Compatibility List that can help you verify if your hardware is supported by Windows NT.

http://www.microsoft.com/resources/sam/licensing/cal_guide/default.asp. This Microsoft Web site describes CAL (Client Access Licensing) in great detail.

http://support.microsoft.com/support/kb/articles/Q141/3/77.ASP. This Microsoft site compares the differences between REGEDIT.EXE and REGEDT32.EXE.

http://www2.rad.com/networks/1997/telnet/proj.htm#INTRODUCTION. This www2.rad.com Web site has an excellent description of how the Telnet protocol really works.