The book "Analysis of Computer and Communication Networks" by Fayez Gebali provides a comprehensive introduction to the fundamentals of network modeling. It aims to familiarize the reader with both basic concepts and advanced techniques for modeling their own network systems. In an era where the Internet is revolutionizing our communication and business practices, a deep understanding of network architecture is essential. The book addresses the challenges and solutions in the field of high-performance networks, focusing on the two critical performance metrics: bandwidth and delay. While bandwidth can be increased through various techniques such as data compression and faster connections, reducing delay requires specialized protocols and high-quality hardware. These aspects are particularly important for time-sensitive applications, such as voice transmissions and real-time videos. The book is a valuable resource for students and professionals engaged in the analysis and design of modern communication networks.