Part of your job as a developer is to find the right answer. It's not cheating if you can do it on the job. Just because you don't have the knowledge on hand do

Part of your job as a developer is to find the right answer. It's not cheating if you can do it on the job. Just because you don't have the knowledge on hand doesn't mean you can't wade through and disseminate the correct solution via Google quickly. Now if this was a phone interview and not some take home style assignment, I would've done the same as you and said, "I don't know that right now", and then give your best educated guess. Best of luck next time.