Bounce What an E-mail message does when it does not get through to its intended destination. The number of actual bits of digital information transferred. Certificate Issued by a certification authority. A certificate bears the user's unique name and a public key. It is encrypted with the authority's private key.
Every certificate has a finite lifetime.
Certification A technical evaluation that establishes the extent to which a particular computer system or network meets a specified set of security requirements. Channel A path used for information transfer between systems. Client A software application that pre-processes information before sending it to a server. The amount of time you are actually connected to and using a computer. Cookie A record of visits to particular websites.