Chapter 3. Radio Frequency and Light Signal Fundamentals: The Invisible Medium
What You Will Learn
After reading this chapter, you should be able to
The primary difference between wireless and wired networks lies in the communications medium. Wired networks utilize cabling to transfer electrical current that represents information. With wireless networks, radio frequency (RF) and light signals have the job of carrying information invisibly through the air. This chapter continues the discussion on concepts common to all types of ...
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