What application hardening measure addresses secure communication between client and server?

Implementing Secure Sockets Layer (SSL) on the server.

Answer Explanation: Although all of the options may be appropriate as part of your attempt to harden this Web server, the question focuses on providing a secure communications environment to clients when on the corporate Web site. The Secure Sockets Layer ( SSL) protocol helps to secure the data exchange between clients and the internet server by encrypting the communication link between them.