An IoT developer wants to ensure that their cloud management portal is protected against compromised...

An authentication policy that requires a password at initial logon, and a second password in order to access advanced features.

An authentication policy which requires user passwords to include twelve characters, including uppercase, lowercase, and special characters.

An authentication policy that requires a user to provide a strong password and on-demand token delivered via SMS.

An authentication policy which requires two random tokens generated by a hardware device.