Explanation
To change the password of the SDDC Manager super user account, the administrator should follow these steps:
* Log in to the SDDC Manager UI as a user with the ADMIN role.
* Go to Administration > Security > Password Management.
* Select the SDDC Manager account from the component drop-down menu.
* Click Rotate Now button.
This is the recommended method for changing the password of the SDDC Manager super user account, as documented in the VMware Cloud Foundation Administration Guide:https://docs.vmware.com/en/VMware-Cloud-Foundation/index.html

Explanation
According to Using the SoS Utility on VMware Cloud Builder2 and Validate the SDDC Manager State3, two of the health checks that can be performed using the SoS tool are:
* -credential-health: This option checks whether all credentials stored in SDDC Manager are valid and can be used to access various components or services.
* -health-check: This option checks whether all components or services managed by SDDC Manager are healthy and running properly.

Explanation
This is because according to VMware documentation, this is what an administrator must register as an external component to complete this task of configuring scheduled backups for the SDDC Manager. SFTP server is one of the supported backup targets for SDDC Manager backups. The administrator can register an SFTP server by navigating to the SDDC Manager UI > Administration > Backup > Site Settings and clicking Register External.

Explanation
This is because according to VMware documentation, this is one of the methods that meets these requirements and is supported for vCenter Server with VMware Cloud Foundation. vCenter HA provides high availability by creating an active-passive cluster of three vCenter Server nodes (one active, one passive, one witness). It also optimizes hardware utilization by allowing resource sharing among different workload domains through Enhanced Linked Mode (ELM).