This course is specifically to practice the exam questions for Salesforce Marketing Cloud Email Specialist Certification. 

This has 6 Practice Tests, each with 20 questions.  So, in total there are 120 Questions in this course.  That's just right amount of practice questions you need for the exam preparation.  Each practice test has a time limit of 30 minutes.  And the passing score is 65%.

This is very similar to the actual certification course in which you have 60 questions in 90 minutes.  With the same structure I made these practice tests to be 20 questions in 30 minutes each.

If you are new to Salesforce Marketing Cloud, it is recommended to take the "Salesforce Marketing Cloud Email Specialist Certification Course" that I published earlier in which I explained the concepts of Salesforce Marketing Cloud with videos as well.  That is quite useful to get full understanding of the Salesforce Marketing Cloud tool.