The Network+ Study Guide explains all you need to know about computer networking to pass CompTIA's Network+ exam. The book covers the fundamentals of local area networks (LANs), the seven-layer Open Systems Interconnect (OSI) network model, and network operating systems (including NetWare, Windows NT, and to a lesser degree Unix variants). Readers will find considerable coverage of the TCP/IP protocol suite, including some of the utility programs used to configure it locally and remotely. There's also a lot of "softer" material about the duties of a network administrator, good troubleshooting practices, and the issues involved in network security. Organized to match CompTIA's stated objectives for the Network+ exam, this guide will prepare you for that test as well as Microsoft's Networking Essentials exam (70-058) .