From what I've been through, it's not about your answer, it's how you answer them. - Being able to answer immediately means you have a good background on what

From what I've been through, it's not about your answer, it's how you answer them. - Being able to answer immediately means you have a good background on what the matteris. - Being able to wait for the question to finish before answering means you are not a "hit-the-ground-running" kind of person, and you wait for full detail before resolving the issue. - Knowing or not knowing the answer to the question is just half the story. The other half is how you deliver your response. A critical skill needed is to respond sensibly, especially on project estimates. It's normal to face unknown technology and learn as you go. - General knowledge is preferable. Specialization is good, but you will be under the microscope if you aren't capable of being moved to say, another language or technology. - Confidence. Seriously, I've seen friends pass interviews like it was a walk in the park - and they don't even know what they were talking about. - Interview is just to know what you are on the surface. Companies will tend to take you in and test you out for a few months. That's where the real challenge is. Do your best there. My advice to you: Do some light reading, and work on your communication skills (though knowledge is preferrable).