Computer networking involves the exchange of data and resources between two or more computers, enabling seamless communication and collaboration. A telecommunication network, which serves as the broader digital infrastructure, facilitates the sharing of resources across various nodes within the system. These connections can be established through both wired and wireless media, with common wired options including fiber-optic and twisted pair cables. The components of a computer network are often categorized based on factors such as bandwidth, network size, transmission medium, and the specific purpose for which the network is designed. Computer networking supports a wide array of applications and services, including the World Wide Web, email, fax communication, and shared access to devices like printers, all of which are essential for modern digital communication. This book is a compilation of chapters that discuss the most vital concepts in the field of computer networking. Most of the topics introduced in this book cover new techniques and the applications of the field. It will provide comprehensive knowledge to the readers