Networks Decoded From Cables to Cloud to Cybersecurity

About Book

Computer Networks: A Simplified Guide for Diploma, BCA, B.Tech and MCA Students is written for learners who want to understand networking, not just memorize it. Computer Networks is a core subject in Computer Science, Information Technology and Engineering programs, yet many students find it difficult because it is often taught in a highly technical way. This book changes that. Every topic starts with a simple meaning, followed by a real-life example and then the technical explanation. For instance, a home Wi-Fi setup is used to explain what a network is, and sending a WhatsApp photo is used to show how network applications work. Concepts build step by step, so even complete beginners can follow along with confidence. What the book covers The first nine chapters follow the standard syllabus: Reference models (OSI and TCP/IP) and the Internet Physical layer, transmission media and telephone networks Data link layer: framing, error control, sliding window, HDLC, MAC sublayer, Ethernet and wireless LANs Network layer: routing algorithms, congestion control, IPv4 and IPv6, and QoS Transport layer: UDP and TCP Application layer: DNS, email, HTTP, SNMP, FTP, SMTP and Telnet Two additional chapters connect the syllabus to the modern world. From LAN to the Cloud explains how a single computer grows into the Internet, and how cloud computing, IaaS, PaaS, SaaS and data centers work. Cyber Security Essentials introduces the CIA triad, authentication, encryption, firewalls, malware, phishing, Zero Trust and incident response. It ends with a case study and a career path from networking into cyber security. Key features Simple language and a logical, chapter-by-chapter flow Real-life examples and labelled diagrams Technical summaries and exam-oriented discussions Review questions with answers at the end of each chapter Glossary of important terms Who should read it Diploma, BCA, B.Tech and MCA students, teachers, competitive examination aspirants, and self-learners who want a strong foundation in Computer Networks.