I've done more than a few software/"DevOps" engineering interviews at DoD contractors and the only three practical technical questions that I was asked across _

I've done more than a few software/"DevOps" engineering interviews at DoD contractors and the only three practical technical questions that I was asked across _all_ of them were 1) what is a CSS selector, 2) how would you join an array of strings into a comma-separated list in C#, and 3) what Linux command one would use to determine disk usage... not exactly LC medium-level problems. These types of places don't seem to be big on even attempting to rigorously test for technical acumen - as long as you had a pulse and sounded like you knew what you were talking about they were happy to extend an offer.