If you’re applying to sales jobs you have to expect that the interview is going to be a test at selling yourself to the interviewer, and that means you need to prepare.
You are shrunk to the height of a nickel and thrown in a blender. The blades start moving in 60 seconds. What do you do? If you want to work at Google, or any of America's best companies, you need to have an answer to this and other puzzling questions.
Are You Smart Enough to Work at Google? by 
The Essential Digital Interview Handbook by 
The Everything Job Interview Question Book by 