When your users connect to the Authentication Portal page to authenticate, they see a security warning message in their browses, which they must accept before they can authenticate. How can you make sure they do not see this security warning message in their browsers? (Select one.)
To avoid security warning messages when users connect to the Authentication Portal, you need to ensure that the certificate presented by the Firebox is trusted by the browsers of your users. This can be achieved by importing a custom self-signed certificate or a third-party certificate into the Firebox, and then importing the same certificate to all client computers or web browsers. This ensures that the certificate is recognized and trusted, eliminating the security warning message.
Because A did not mention that cer to be imported to Firebox and client is host or CA. If it is host, A won't work. So A is inconclusive. However, D is effective. Answer should be D.
D would be a security risk for all sites
A. We need to import certificate to browser trust root So we can use third party import to both firebox and browser or the other way we can get default firebox cert(http://firebox_IP:4126) and then import to client browser
Answer is A. Not D, that would be a security risk.