Now, instead, they generally don't recruit (google is too large to not have exceptions) without some specific hiring managers and headcount in mind.
They will tell you what those groups are and what they do. So for example, the person i interviewed last week was targeted at two teams. I actually specifically asked if he knew what he was being interviewed for, because i like to get some idea what the candidate thinks whatever job they are interviewing for means, and he was able to tell me the two groups and knew what they did.
I did know I was interviewing for a general SWE role, but not anything more than that, and from all appearances the team was completely up in the air until after my interviews.
I don't know how much has changed since 2014. I also didn't get any of these pre-screen testing questions from a non-engineer. Is that normal practice for all interviews now?