Introduction -- Introduction to Communications Networks -- Data Communications -- Communications Channels and Media -- Multiplexer and Switching Concepts -- Flow Control and Reliable Transmission -- Modulation, DSL, Cable Modem, and FTTH -- Ethernet and Fast Ethernet Technology -- Gigabit and 10 Gigabit Ethernet Technology -- LAN Interconnection Devices -- Internet Protocols Part I -- Internet Protocols Part II and MPLS -- Wireless Local Area Network (WLAN) -- Voice over Internet Protocols (Voice over IP) -- Introduction to Cryptography -- Network Security -- Conclusion.

The hands-on textbook covers both the theory and applications of data communications, the Internet, and network security technology, following the ACM guideline for courses in networking. The content is geared towards upper undergraduate and graduate students in information technology, communications engineering, and computer science. The book is divided into three sections: Data Communications, Internet Architecture, and Network Security. Topics covered include flow control and reliable transmission; modulation, DSL, cable modem, and FTTH; Ethernet and Fast Ethernet; gigabit and 10 gigabit Ethernet; and LAN interconnection devices, among others. The book also covers emerging topics such as IPv6 and software defined networks. The book is accompanied with a lab manual which uses Wireshark, Cisco Packet Tracer, and virtual machines to lead students through simulated labs.