You bow to the house of Jobs, but how black is your turtleneck, really? You’re way into the Cult of Mac and have already aced round 1 of our Apple IQ test, but how much do you really know about the house that Jobs built? Test your Apple knowledge with the following 20 questions of specs, trivia, and lore. Make no mistake, this one’s a doozy.1. What HTML layout engine powers Apple’s Safari Web browser?a. Gecko b. WebKit c. KHTML d. Presto Take the Apple IQ test: Round 2More InfoWorld quizzesThe 2010 InfoWorld Geek IQ TestIT personality type quizThe InfoWorld mobile tech IQ testProgramming IQ test: Round 2Linux IQ test: Round 2 Software DevelopmentTechnology Industry