What college football coaches were undefeated their rookie season?

Answer 1

There are several, here are some.

Oklahoma Sooners of 1954 - 1957

Texas Longhorns of 1914 -1915

Notre Dame Fighting Irish of 1929 - 1930

Nebraska Cornhuskers of 1994 - 1995

Penn State Nittany Lions of 1968 - 1969

Answer 2

To the best of my knowledge the only coaches to accomplish this in their first year are Terry Bowden in 1993 at Auburn and Chris Petersen in 2007 at Boise State. Unfortunately for Bowden and his team, that was also the first year of sanctions that had been handed down on Auburn from the NCAA and they were ineligible for post season play and national title consideration.