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Write a summary of Week 3’s PowerPoint slides (Chapter 3) in the attached file
Chapter Three
Conducted and Wireless Media
Data Communications and Computer Networks: A Business User’s Approach
Eighth Edition
© 2016. Cengage Learning. All right reserved.
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After reading this chapter,
you should be able to:
Outline the characteristics of twisted pair wire, including the advantages and disadvantages
Outline the differences among Category 1, 2, 3, 4, 5, 5e, 6, and 7 twisted pair wire
Explain when shielded twisted pair wire works better than unshielded twisted pair wire
Outline the characteristics, advantages, and disadvantages of coaxial cable and fiber-optic cable
Outline the characteristics of terrestrial microwave systems, including the advantages and disadvantages
Data Communications and Computer Networks: A Business User’s Approach, Eighth Edition
© 2016. Cengage Learning. All Rights Reserved.
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After reading this chapter,
you should be able to (continued):
Outline the characteristics of satellite microwave systems, including the advantages and disadvantages as well as the differences among low-Earth-orbit, middle-Earth-orbit, geosynchronous orbit, and highly elliptical Earth orbit satellites
Describe the basics of cellular telephones, including all the current generations of cellular systems
Outline the characteristics of short-range transmissions, including Bluetooth
Data Communications and Computer Networks: A Business User’s Approach, Eighth Edition
© 2016. Cengage Learning. All Rights Reserved.
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After reading this chapter,
you should be able to (continued):
Describe the characteristics, advantages, and disadvantages of Wireless Application Protocol (WAP), broadband wireless systems, and various wireless local area network transmission techniques
Apply the media selection criteria of cost, speed, right-of-way, expandability and distance, environment, and security to various media in a particular application
Data Communications and Computer Networks: A Business User’s Approach, Eighth Edition
© 2016. Cengage Learning. All Rights Reserved.
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Introduction
The world of computer networks would not exist if there were no medium by which to transfer data
The two major categories of media include:
Conducted media
Wireless media
Data Communications and Computer Networks: A Business User’s Approach, Eighth Edition
© 2016. Cengage Learning. All Rights Reserved.
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Twisted Pair Wire
One or more pairs of single conductor wires that have been twisted around each other
Twisted pair wire is classified by category. Twisted pair is currently Category 1 through Category 7, although Categories 1, 2 and 4 are nearly obsolete
Twisting the wires helps to eliminate electromagnetic interference between the two wires
Shielding can further help to eliminate interference
Data Communications and Computer Networks: A Business User’s Approach, Eighth Edition
© 2016. Cengage Learning. All Rights Reserved.
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Twisted Pair Wire (continued)
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