CS knowledge during interview

What do you think about purely CS knowledge questions during the interview? What I mean is:

• Data structures (stacks, queues, lists, trees)
• Algorithms (sorting, search, shortest path, data compression)
• Recursion, etc. #-Link-Snipped-#

Unless you have some specific need (search engine implementation, low level no-framework programming), I am struggling to see the value of questions like that. I feel like "fresh" college grads would answer questions like that easier than some experienced software engineer, who's last time implementing any type of array sort was 10 years ago in college.