5. meredith is stuck in the airport on a long layover while traveling for work. she sees two wi-fi’s she can log onto: one says airport wi-fi and the other says free airport wi-fi. she needs to sign on and pay some bills. which wi-fi option should she choose? a)  neither until she verifies that it is the official wi-fi offered by the airport and she makes sure she is using ssl and an up-to-date firewall b)  free airport wi-fi c)  log into both of them and see which one is faster d)  airport wi-fi e)  neither until she verifies that it is the official wi-fi offered by the airport

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?