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CCNA Cisco Certified Network Associate Study Guide (Exam 640-802), 3rd Edition by Richard Deal

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5
Wireless
CERTIFICATION OBJECTIVES
 
This chapter provides an introduction to wireless communications. Wireless transmission has been used for a long time to transmit data by using infrared radiation, microwaves, or radio waves through a medium such as air. With this type of connection, no wires are used. Wireless LANs (WLANs) are becoming more and more common in companies’ ...

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