You need to pass three Office Specialist exams to be  
awarded the Microsoft Office Specialist: Associate certification.
 
Here you have all the practise exams to chose from. Setting you up for success.
 
This bundle includes all the practise exams for the Microsoft Certified Associate certification
 
To earn the Microsoft Office Specialist: Associate certification, pass three of the following exams:
MO-100: Microsoft Word (Word and Word 2019)
MO-200: Microsoft Excel (Excel and Excel 2019)
MO-300: Microsoft PowerPoint (PowerPoint and PowerPoint 2019)
MO-400: Microsoft Outlook (Outlook and Outlook 2019)