This book derives its organization from Microsoft's published objectives for the Network Infrastructure exam. In taking on each objective, the authors--internal Microsoft documentation writers--explain the engineering question at stake (such as how best to optimize Microsoft Proxy Server for Internet access) before explaining alternative solutions with pros and cons for each. Because this book--and the test it prepares its readers for--is concerned with questions of design, how-to instructions and screen shots are less important than network diagrams and design worksheets. The companion CD-ROM includes a timed evaluation copy of Windows 2000 Advanced Server, as well as a searchable electronic copy of the text and a key to access online review questions. --David Wall