I'm not a manager-manager, but I am a technical manager and - at the end of the day - basically the guy who gets the hiring decision whenever I need more people.
I don't care about what you know beyond the basics, and I also don't care where (or if) you went to college or that your degree is even slightly related to what we're doing. The things I look for are that you have some talent with system design, architecture and programming, a passion for technology (aka, it's not just a 9-5 job thing, but you eat, live, and breathe it), and the capability to go learn and figure things out on your own. Along with the third thing, a general, broad set of knowledge is good, but as long as you can use Google or books or experiments to figure things out, I'm okay. I'd much rather you be able to learn and adapt.
You'd be amazed how many people fail at least #3. I don't want to hand-hold you or have to spoon feed you answers. Don't know? Go look it up. Go try something. Just don't come over and ask for help right away. If you've gotten stuck somewhere, I'll help, but you damn well better have beaten your head against the wall for a few hours/days/weeks (depending on problem complexity) before asking.