Computer

A facility containing a number of networked computers used for storing, processing and distributing enormous amounts of data. They include redundant or backup power supplies, redundant data communications connections, military-grade security, and environmental controls.

Collection of information organized so that a computer application can quickly access selected data. Website databases allow a website such as an e-commerce site, to store customer information and process credit card purchases.

To find and correct equipment defects or program malfunctions. It usually refers to examining and removing errors from a program's source code and this is done by developers, that will inspect the code searching for the root of the error/s.

A cumulative backup of all changes made since the last full backup. The advantage to this is the quicker recovery time, requiring only a full backup and the latest differential backup to restore the system.

Direct Action Virus is a computer virus type which is called a non-resident virus because it mainly runs on computer memory. This type of viruses generally store itself to the specific file types and starts itself after a computer reboot.

DR is the process of recovering after a data disaster and restoring data to a useful state. An organization’s DR process should be created and documented in advance and audited regularly.

Short for denial-of-service attack. A DoS is an organized attempt to disrupt email or Web services by sending more messages or traffic than a server can handle, effectively shutting down a website or email service until the DoS messages stop.