A cloud-based identity and access management service for securing user authentication and resource access
I do not believe that there is an upper limit of experience levels since there will always be new training to complete. @saldana please confirm if you know the answer to this.
"0 answered questions" on a profile just means that that person has not answered any user questions on the platform. "0 answers accepted" means that regardless of whether you answered questions, the original posters did not mark the answers as verified.
Hope this helps!