iOS Enterprise Deployment / Expiration

Question

We recently signed up for an iOS Enterprise account for internal app distribution.

Searching the forums reveal two things which I would like to get a confirmation fo

Answer 1

You need to deploy the app once a year with an updated provisioning profile. The app will cease to work on the day the provisioning profile expires otherwise. Apple allows you to have two active distribution mobile provisioning profiles active at the same time so you can renew the certificate months in advanced if necessary. You do not have to update the app when the distribution certificate expires, it will just need to be renewed before you generate a new Mobile Provisioning Profile.