9781133608196_IM_ch03-1.docx - Network Guide to Networks...

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Network+ Guide to Networks, 6 th Edition 3-1 Chapter 3 Transmission Basics and Networking Media At a Glance Instructor’s Manual Table of Contents Overview Objectives Teaching Tips Quick Quizzes Class Discussion Topics Additional Projects Additional Resources Key Terms
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Network+ Guide to Networks, 6 th Edition 3-2 Lecture Notes Overview Media are the physical or atmospheric paths that signals follow. Originally, networks transmitted data over thick coaxial cables. Today, data transmits over cable sheathed in flexible plastic containing twisted copper wire inside. For long-distance network connections, fiber-optic cable is preferred. In addition, more and more organizations are sending signals through the atmosphere to form wireless networks. Because networks are always evolving and demanding greater speed, versatility, and reliability, networking media change rapidly. Network problems often occur at or below the Physical layer. Therefore, students should understand the characteristics of various networking media to design and troubleshoot networks. Students also need to know how data is transmitted over the media. This chapter discusses physical networking media and the details of data transmission. Students will learn what it takes to make data transmission dependable and how to correct some common transmission problems. Chapter Objectives After reading this chapter and completing the exercises, the student will be able to: Explain basic data transmission concepts, including full duplexing, attenuation, latency, and noise Describe the physical characteristics of coaxial cable, STP, UTP, and fiber-optic media Compare the benefits and limitations of different networking media Explain the principles behind and uses for serial connector cables Identify wiring standards and the best practices for cabling buildings and work areas Teaching Tips Transmission Basics 1.Define and distinguish between the terms transmit, transmission and transceiver.Analog and Digital Signaling1.Introduce the analog and digital signaling methods.2.Describe how computers generate and interpret digital signals.3.Define the term volt.4.Explain the relationship of voltage to electrical signals.5.Describe how signals travel over copper cabling, fiber-optic cable, and through the atmosphere.6.Describe how analog signals are generated.
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Network+ Guide to Networks, 6 th Edition 3-3
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