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Introduction to Networks Companion Guide v5.1 is the official supplemental textbook for the Introduction to Networks course in the Cisco® Networking Academy® CCNA® Routing and Switching curriculum. The course introduces the architecture, structure, functions, components, and models of the Internet and computer networks. The principles of IP addressing and fundamentals of Ethernet concepts, media, and operations are introduced to provide a foundation for the curriculum. By the end of the course, you will be able to build simple LANs, perform basic configurations for routers and switches, and implement IP addressing schemes.
The Companion Guide is designed as a portable desk reference to use anytime, anywhere to reinforce the material from the course and organize your time.
The book’s features help you focus on important concepts to succeed in this course:
Download the sample pages (includes Chapter 1 and Index)
Introduction xxiv
Chapter 1 Explore the Network 1
Objectives 1
Key Terms 1
Introduction (1.0.1.1) 3
Globally Connected (1.1) 4
Networking Today (1.1.1) 4
Providing Resources in a Network (1.1.2) 7
LANs, WANs, and the Internet (1.2) 11
Network Components (1.2.1) 11
LANs and WANs (1.2.2) 20
The Internet, Intranets, and Extranets (1.2.3) 23
Internet Connections (1.2.4) 25
The Network as a Platform (1.3) 28
Converged Networks (1.3.1) 28
Reliable Network (1.3.2) 30
The Changing Network Environment (1.4) 35
Network Trends (1.4.1) 35
Networking Technologies for the Home (1.4.2) 39
Network Security (1.4.3) 42
Network Architecture (1.4.4) 44
Summary (1.5) 47
Warriors of the Net (1.5.1.2) 47
Conclusion (1.5.1.3) 47
Practice 48
Class Activities 48
Labs 49
Packet Tracer Activities 49
Check Your Understanding Questions 49
Chapter 2 Configure a Network Operating System 53
Objectives 53
Key Terms 53
Introduction (2.0.1.1) 54
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