問題文
A developer turns on the Progressive Web App attributes of an existing application and the features do not appear at run time. Which pair of conditions has to be satisfied?
選択肢
- The application has to have push notifications enabled and a credential of the key pair type selected for that use.
- The application has to be served over a secured connection and the attribute of the definition that turns on the friendly addresses has to be on.
- The application has to have a worker file uploaded as a static file of the application and a manifest written by hand into the page template of the theme of that application.
- The application has to use the newest Universal Theme and the installable attribute has to be turned on for every page of that application.