Google Analytics cannot collect data from which systems by default?

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)

Which reports indicate how website referrals, organic search, and ad campaigns assisted in conversions?

Multi-Channel Funnel reports Goals reports Acquisition reports Ecommerce reports Download Google Analytics Individual Certification Exam Answers (PDF)

Filters cannot perform what action on collected data?

Convert dynamic page URLs to readable text strings Exclude traffic from particular IP addresses Include shopping preferences Include data from specific subdomains Download Google Analytics Individual Certification Exam Answers (PDF)