The Professional Scrum Product Owner Level I certification (PSPO I), accredited by scrum.org founded by Ken Schwaber, is the entry level certification for Product Owner. After studying for a couple of days, I scored 91.3% and passed this exam today.
As far as I am concerned, this exam is more challenging than PSM I. There are 80 questions to be answered in 60 minutes. I answered all the questions in 50 minutes and reviewed them till the exam time almost expired.
The exam user interface for PSPO I is different from the one for PSM I, but the same as the Open Assessments.
For PSPO I aspirants, kindly be noted that this is not an easy test, please fasten your seat belts.