1.  It gets your foot in the door and gets you an interview.<p>2.  It likely gives you valuable experience to answer white board questions.<p>I don&#x27;t think it&#x27;s a perfect process but it weeds out fakers&#x2F;resume padders.  Also a lot of companies arent looking for specialists but want broad skills to handle a variety of problems cause the problems 5 years from now could be very different for the company.