How do I limit responses to multiple questions in a single form?

Como eu faço para limitar respostas para diversas perguntas em um único formulário?

If you want to limit responses based on a unique question, please check this guide: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question 

If you want to set unique submissions, based on users browser or IP address, please check this guide: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form