This textbook was purposefully created for those who may be interested in certification and desire to establish a foundation in the network technology. The book is structured in a format to allow motivated individuals to perform tasks related to installation, operation and maintenance of Routers, Switches network-related devices and services. Using practical projects (Or what is referred to as "Hands-On" activities) readers of this book will perform commands and tasks allowing them to understand and implement technology relying only on accumulated knowledge developed through study, repetition and successful practice.