This process is accomplished through a multiplexer, such as dense wavelength division multiplexers. An authentication method that can be used when connecting to an Internet Service Provider. CHAP allows you to log in to your provider automatically, without the need for a terminal screen. Compression Algorithm that minimizes the redundancy in the signal to be transmitted. The process of concealing the contents of a message from all except those who know the key.
Cryptography is used to protect e-mail messages, credit card information, and corporate data.
As the Internet and other forms of electronic communication become more prevalent, electronic security is also becoming increasingly important.