A significant portion of the EX457 exam involves Ansible Tower:
⦁ Use Ansible Tower
⦁ Create credentials
⦁ Create organizations, users and teams
⦁ Create a dynamic inventory
⦁ Create a project from a Git repository
⦁ Create a job template
⦁ Create a survey
However, Ansible Tower has been rebranded/replaced in
Ansible Automation Platform with Automation Controller.
Any suggestions on how to go about preparing for that part
of the EX457 exam that involves those objectives requiring
use of Ansible Tower.
Not sure what the angle of the question is. For those objetives you list you can refer to the training materials as Chetan was doing. If you only have access to an Ansible Automation Platform (not Tower) environment, the product itself has not changed significantly on those areas. Any training/practise on AAP on those topics should be enough to prepare for the exam objectives based on Tower.
Hope this helps,