ISM 4220 EXAM 2 (WITH COMPLETE SOLUTIONS)

In one sentence, what does Wi-Fi mean? correct answers Alliance of vendors claiming interoperability. Can a single access point handle the needs of a 100 employee company? correct answers No (only the smallest of companies can) What set of standards does Wi-Fi follow? correct answers 802.11 Which is more reliable; wired or wireless? correct answers Wired Why is wired more reliable? correct answers Propagation issues (and interference) What is the number one issue with Wi-Fi networks? correct answers Propagation issues Access points connect wireless devices to ____. correct answers Ethernet LAN Radio frequency is measured in ___. correct answers Hertz Which antenna type wastes more signal: Dish or Omni Directional? correct answers Omni Wi-Fi and Cellular mostly use which type of antenna: Dish or Omni Directional? correct answers Omni With a signal strength of 30 mW from 5 meters, what is the expected strength at 15 meters from the source? correct answers 3.33 mW INVERSE Square law s1 = (r1/r2)^2 Does a higher humidity level impact Wi-Fi signal? correct answers Yes, makes it worse What creates the largest amount of interference in Wi-Fi signals? correct answers Mulitpath Interference Do higher frequency signals attenuate faster than lower frequency signals? correct answers Yes Defined radio signal ranges used for a specific purpose, such as FM, are known as? correct answers Service Bands What 3 Wi-Fi channels do not overlap in frequencies? correct answers 1,6 and 11 Wi-Fi operating at 5GHz has a maximum channel size of ______. correct answers 160 MHz What does Media Access Control methods help with on a Wi-Fi network? correct answers Coordinating times when device transmit