What metric-dimension combination is not valid?

To recognize users across different devices, what feature must you enable?

User ID AdWords Linking Audience Definitions Attribution Models Download Google Analytics Individual Certification Exam Answers (PDF)

When does the Analytics tracking code send a pageview hit to Google Analytics?

Every time a user loads a webpage with embedded tracking code Every time a user clicks a video on a website Every time a user adds an item to an online shopping cart Every time a user searches on a website Download Google Analytics Individual Certification Exam Answers (PDF)

What feature is required to send data from a web-connected device (like a point-of-sale system) to Google Analytics?

The Measurement Protocol The Networking Protocol Browser cookies Data Import Download Google Analytics Individual Certification Exam Answers (PDF)