An engineer must configure web redirection for guests to a portal where no authentication is required and an Acceptable Use Policy must be accepted by the guest before network access is allowed…

A Sponsored guest portal requires a sponsor to create credentials for the guest, which contradicts the requirement that 'no authentication is required'.

A Self Registered guest portal requires guests to create their own accounts, which is a form of authentication, going against the 'no authentication is required' rule.

A Hotspot guest portal in Cisco ISE is specifically designed for scenarios where explicit authentication, such as a username and password, is not required. Guests are simply redirected to the portal to acknowledge an Acceptable Use Policy (AUP) or click through to gain network access, perfectly matching the described requirements.

A Custom portal is a flexible option, but 'Hotspot' is the specific built-in portal type designed for this exact use case.