You're absolutely right that I would expect a sysadmin to know these off-the-cuff, but this interview was for a junior software engineer.
It was not advertised as for a DBA or sysadmin position. They also didn't change up the questions after realizing that they weren't going to get anywhere. Instead they just kept going down their list of "okay, what is RAID 2...RAID 3..."
You're absolutely right that I would expect a sysadmin to know these off-the-cuff, but this interview was for a junior software engineer.
It was not advertised as for a DBA or sysadmin position. They also didn't change up the questions after realizing that they weren't going to get anywhere. Instead they just kept going down their list of "okay, what is RAID 2...RAID 3..."
Oh right, for a junior developer these are not required notions. And insisting on Raid 2, 3 and other quite uncommon levels was pointless