1. What is an “access point” and why is one necessary for wireless LANs?
2. List five signal potential propagation problems and briefly define each one.
3. How many Wifi channels have been designated in each service band? Do they overlap each other? Why does this matter? Are they licensed or unlicensed? Why does this matter?
4. What are two advantages and two disadvantages of the 5 GHz service band over the 2.4 GHz service band?
5. What is Spread Spectrum and why is it used? What multiplexing strategy is most commonly used?
6. What is Media Access Control and why is it important?
7. What is MIMO and what are its two main benefits?
8. Since signals are now being sent through the air, what security concerns does this create? List two potential threats and the countermeasures used to counteract these threats.
1. What is an “access point” and why is one necessary for wireless LANs? 2. Lis
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