I would say it depends on the kind of questions they ask. I had a lot of "technical interviews" where the questions could have been answered by someone who just took a class or certification exam.

Another kind of question can give good insight into how someone approaches a problem or whether they have some actual experience, like "the server is slow, what do you do first? What do you do next?"

Then there are the HR questions I dreaded like "Describe a situation where you had to work with others to solve a difficult problem."