Pt. I. The Internet and Data Communications Basics -- Ch. 1. Getting Started with Data Communications -- Ch. 2. The Internet and Information Superhighway -- Ch. 3. Transmission Media -- Ch. 4. Standards and Protocols -- Ch. 5. Hardware for Data Communications -- Pt. II. Popular Types of Networks -- Ch. 6. Local Area Networks -- Ch. 7. Metropolitan and Wide Area Networks -- Ch. 8. Mobile and Wireless Networks -- Pt. III. Design, Implementation, and Management Issues in a Network Environment -- Ch. 9. Security Issues and Measures -- Ch. 10. Network Development and Management: A Life Cycle Approach -- Ch. 11. Personal, Social, Organizational, and Legal Issues -- Pt. IV. Data Communications and Internet Applications -- Ch. 12. Intranets and Extranets -- Ch. 13. Global Information Systems -- Ch. 14. Business Applications