I feel stupid. When asked how traceroute works, I gave a decent enough ten second overview. And when asked how the TTL came into place, I didn't have a good answer. He gave me a hint by asking me what TTL was measured in and I said (drum roll please)...."milliseconds"
After the interview, I fired up the cmd line and as soon as I typed in the command, I saw how egregious my error was...I was thinking TTL as in DNS TTL, not hop count TTL. d'oh!
