In Okta's KB articles the set of functions under the 'Provisioning' concept are referred to as CRUD. This is a concept you also meet when referring to CRUD APIs. What about its meaning here, in Okta's vision?
Solution: In 'Provisioning', CRUD stands for Create, Read, Upload, Deprovision

Which port and which of the: 'http' or SSL enabled connections does Okta recommend?
Solution: Port 443 and SSL enabled connections

Okta has a json representation of objects such as 'users', json schema interchanged on API calls, as an example, but what about the format of information regarding of a user going to a SCIM server for creating the user in an On Premises application?
Solution: Format stays the same: json

Which of the following is / are Okta required attributes?
Solution: sAMAccountName

On a Windows machine, which is the right behavior if you try to sign into your Okta org and agentless DSSO is properly configured for it?
Solution: You will be automatically redirected to your Load-Balancing Application, if you have one configured, enter credentials for it and then redirected back to Okta org