And ya' know, that would be a fine answer, "I use resharper and haven't even had to think about that in years". I would also accept "System.Collections" as a r

And ya' know, that would be a fine answer, "I use resharper and haven't even had to think about that in years". I would also accept "System.Collections" as a reasonable answer. You should here some of the responses I get: What's a namespace? Uhmmm, HashTable? I don't use collections. Also, if they can't name some namespaces I'll usually ask them what classes they're familiar with for accessing a database or opening a file. If you can't name parts of the framework you use on a daily basis by namespace of class name, you're not going to be a very productive programmer. If knowing this stuff isn't important, than I'm an expert Java programmer too. I just can't name any of the packages or classes, but I can tell you all about inheritance.