What is not considered a default “medium” in Google Analytics?

What would prevent data from appearing in a Custom Report?

Too many metrics in a Custom Report A filter that removes all the data Too many dimensions in a Custom Report Custom Report isn’t shared with users in the same view Download Google Analytics Individual Certification Exam Answers (PDF)

Google Analytics cannot collect data from which systems by default?

Websites Offline inventory database Mobile devices Online point-of-sale systems Download Google Analytics Individual Certification Exam Answers (PDF)

What feature can join offline business systems data with online data collected by Google Analytics?

User ID Data import Goal tracking Google Ads Linking Download Google Analytics Individual Certification Exam Answers (PDF)