The World of computer networks and data communications is a surprisingly vast and increasingly significant field of study. Computer networks involve a wide range of individuals including   business managers, computer progremmers , system designers, office managers, home computer users,and everyday citizens. Data Communications and computer Networks,Forth Edition retains many of the popular element found in the third edition , such as readabillity , acomfortable balance batween the technologies.However ,chapter are also updated for currency and include information   about topics such as wireless technology, compression ,Linux,network security,error control codes, and convergence in the communications industry.

- Introduction to computer networks and data
- Fundamentals of data and signals
- Conducted and Wreless Media
- Making Connections
- Making Connections Efficient: Multiplexing and Comprssion
- Error,Error Detections , and Error Control
- Local Area Networks:The Basics
- Local Area Networks : Internetworking
- Local Area Networks : Software and Support Systems
- The Internet