What is the command to access the server for creating a mailbox manually?

Accessing the server to manually create a mailbox typically requires a direct connection to that server, specifically through a remote desktop session. This is essential because creating a mailbox usually involves interacting with the Exchange Management tools installed on the server. By using Remote Desktop into EX01, you gain the necessary graphical interface to navigate to the Exchange Management Console, where the mailbox can be created.

The other options do not provide the proper means to create a mailbox. Simply pinging EX01 checks for the server's availability but does not allow access to its management tools. Logging into the Exchange Management Console directly is a crucial step, but this action requires remote access to the server first. Accessing the mail server via FTP is not applicable for this task, as FTP is intended for file transfer, not mailbox creation.