How is knowledge acquisition from certification preparation described compared to relying solely on on-the-job learning?

Answer

Certification preparation demands a proactive approach.

Relying solely on on-the-job learning tends to result in reactive skill sets (solving immediate problems), whereas certification preparation demands a proactive approach covering potential scenarios not yet encountered.

How is knowledge acquisition from certification preparation described compared to relying solely on on-the-job learning?
jobcareercertificationOpportunityskill