What cannot be collected by the default Analytics tracking code?

What report shows the percent of site traffic that visited previously?

Referrals report Frequency & Recency report New vs Returning report Sales Performance report Download Google Analytics Individual Certification Exam Answers (PDF)

What report shows users who initiated sessions over 1-day, 7-day, 14-day, and 30-day periods?

Active Users report Cohort Analysis report Users Flow report User Explorer report Download Google Analytics Individual Certification Exam Answers (PDF)

Which Goals are available in Google Analytics?

Pageview, Event, Transaction, Social Destination, Event, Duration, Pages/Screens per Session Location, Event, Time, Users per Session Destination, Event, Pageview, Social Download Google Analytics Individual Certification Exam Answers (PDF)