What is the main difference between the job functions of a L2 System Administrator and a L1 System Administrator?

L1 and L2 system administrator refers to the level of competencies/skill a person has in terms of system administration,where 1(one) equates as a beginner and the increments reflects as a superior level of it.

In case you need overview of the Differences between L1, L2, L3 system administrator and exactly what are duties of the Level I: Novice System Administrator, Level II: Junior System Administrator, Level III: Intermediate/Advanced System Administrator, Level IV: Senior System Administrator and Management-level job descriptions I have bumped into a nice document which describes Required Skills, Required Background, Desirable Background and Skills and Appropriate Responsibilities for each role