If you don't want to hear about USB details, beware, clicking often involves USB mice.
More importantly, telling someone there is no right answer, and go into as much detail as they want, and then cutting them off when they do is a bad interview experience. At least guide them on where you want to focus. Or let them take you on an adventure through USB. The point of this as an interview question is to demonstrate broad knowledge as well as some detailed knowledge --- it doesn't particularly matter which knowledge.
If someone can figure out USB, they can figure out TCP, etc. You're looking for people who can figure things out. It's all distributed state management.
Maybe a little different if you're hiring a contractor than a staff member.
More importantly, telling someone there is no right answer, and go into as much detail as they want, and then cutting them off when they do is a bad interview experience. At least guide them on where you want to focus. Or let them take you on an adventure through USB. The point of this as an interview question is to demonstrate broad knowledge as well as some detailed knowledge --- it doesn't particularly matter which knowledge.
If someone can figure out USB, they can figure out TCP, etc. You're looking for people who can figure things out. It's all distributed state management.
Maybe a little different if you're hiring a contractor than a staff member.