Guide to OSI and TCP/IP Models

The book provides a comprehensive introduction to computer networks, starting with essential networking terms and a thorough explanation of the OSI model, detailing connection-oriented and connectionless communications. It meticulously outlines the functions of each layer and the protocols involved. The journey of a packet from source to destination is explored in depth, followed by an analysis of the TCP/IP model, including key protocols such as IP, TCP, and UDP, as well as application layer protocols like HTTP and FTP. Important concepts are emphasized in highlighted sections for clarity.