A customer requires a Cisco ISE deployment where quests must log in to a webpage with unique credentials in the form username. User1 and Password: A463646808. Which deployment should the customer use?

Using a mobile number field is for authentication via SMS or similar methods, not for logging in with a specific username and password.

Hotspot portal authentication typically focuses on an AUP acceptance or a single shared credential for all users, not unique individual credentials.

A single credentials login to a guest portal in Cisco ISE allows guests to authenticate using unique, predefined usernames and passwords. This method is suitable for scenarios where credentials are provided beforehand, directly matching the requirement for logging in with 'username. User1 and Password: A463646808'.

Captcha protection self-registration involves users creating their own accounts with CAPTCHA verification, which does not fit the requirement for pre-assigned, unique credentials.