Google Campus asked a bunch of other personal questions (ethnicity, religion, sexual orientation etc if I’m not mistaken).
The funny part is that in Europe this is considered extremely sensitive information and there are even strictrier laws and penalties for storing those than the regular personal data.
It's common in UK on some forms, AFAIK it might actually have had a positive impact at one point due to tracking correlations between rejections on requests and applicants race/gender.
We are going off topic, but I registered at kubecon with my work email and I was spammed by them with marketing emails, asking if they can sell stuff/trainings to my company.
I highly doubt this, it's far more likely they want to know the makeup of their demographic for marketing purposes (ie., approach company with detailed statistics about who will see their convention ads, or modify their own in-house ads). Usually that's what such surveys are used for if I'm not mistaken. It seems a little warped to me to jump straight to minimum diversity quotas.
As a European, this was a huge WTF moment (my co-workers had the same moment). Why would you ask something like that ?