Two$-$factor authentication utilizes a$($n$)$:

Group of answer choices

A$.$ a digital certificate.

B$.$ unique password.

C$.$ a firewall.

D$.$ a multistep process of authentication.

E$.$ encrypted connection.

Group of answer choices

A$.$ enforce a security policy on data exchanged between its network and the Internet.

B$.$ create an enterprise system on the Internet.

C$.$ create access rules for a network.

D$.$ check the accuracy of all transactions between its network and the Internet.

E$.$ check the content of all incoming and outgoing email messages.