When your survey respondents do not have an active network connection, you can set up offline response submissions. The data will be uploaded to the account once a connection is up and running. This feature is suitable for mass collections. Read more about running an offline survey.
When you want to prevent multiple responses from the same person, you can generate a unique URL that can only be accessed once. Learn how to generate a unique URL.
You can set Restrictions when you want to restrict or protect your survey responses with a password. You can set a cut off date or maximum response count, and secure your survey responses by adding a password. Learn how to set restrictions on a survey.
If you want to publish a survey to specific groups or portals, Visibility settings will get the job done. Learn how to change the visibility settings of your survey.