Most feel they can hand wave through their technical interviews by citing some abstraction that while possibly correct doesn't actually solve the problem presented. If you are interviewing for a software position, hand waving doesn't write code.
Many others feel the technical questions are beneath them and refuse to answer very basic questions that are used to simply weed out the vast sea of know nothings.
If you fall into either of these camps, you have a problem. Your response to the STL question hints you may be suffering from the latter problem.
The question about the STL containers is not "overly technical". It's just stupid.