Alert Network + Study Guide explains all you need to know about computer networking to pass CompTIA's Network + exam. This book covers the basics of local area network (LAN), seven-layer Open Systems Interconnect (OSI) network model, and network operating systems (including NetWare, Windows NT, and to a lesser degree Unix variants). There are also a lot of material "softer" on the duties of a network administrator, a good practice problem solving, and issues involved in network security. Organized to match the other goal for the CompTIA Network + exam, this guide will prepare you for the tests as well as Microsoft's Networking Essentials exam (70-058). Presentation style with solid prose, and tables included in which there is an option or variations to memorize.