We are pleased to present this textbook on Computer Networks, meticulously prepared in accordance with the syllabus prescribed by Tumkur University for the Bachelor of Computer Applications (BCA) programme. This book comprehensively addresses the requirements of the Fourth Semester theory course (BCAT 401) and the Computer Networks Laboratory (BCAP 402), ensuring alignment with the prescribed course objectives, outcomes, and credit structure.
The text systematically covers the fundamental principles of data communication and networking, including network models, the Physical Layer, Data Link Layer, Transport Layer, and Application Layer. Each unit has been developed with a focus on conceptual clarity, structured explanations, relevant illustrations, and protocol-level understanding to facilitate effective learning and examination preparedness. Emphasis has been placed on presenting the subject matter in a logical and progressive manner, enabling students to build a strong theoretical foundation.
In addition to detailed theoretical coverage, this book incorporates a comprehensive laboratory manual designed to support practical learning. The lab section provides structured experiments, simulation-based exercises, topology design, IP addressing, network configuration, troubleshooting techniques, and implementation using open-source tools. This integrated approach ensures that students gain both analytical insight and hands-on technical proficiency.
Contents –
UNIT 1 Introduction to Computer Networks
UNIT 2 Physical Layer
UNIT 3 Data Link Layer
UNIT 4 Transport Layer
UNIT 5 Application Layer
LAB Manual
