What did you do for the year off? I've always believed that tech is one of the most generous industries for this sort of "resume gap" of a year+ but if the question comes up I don't think most people would think highly of answers like "sleep" or "video games", even though more socially acceptable answers like "travel" aren't all that different... I wonder how much it varies from tech company to company. Last time I did interviewing I had an older guy ask about my GPA, and a few wondered what I was up to in 2013 when I had a year off my resume (finishing off school but that doesn't answer what the summer was spent doing, which wasn't much of note).