rDNS
(pronounced as separate letters) Short for reverse DNS, a method of name resolution in which an IP address is resolved into a domain name, which is the opposite of the typical resolution method of DNS, which resolves domain names into IP addresses. One practical application of reverse DNS is as an anti-spam measure. Because spammers often use invalid IP addresses to send e-mails, rDNS will determine the authenticity of a domain name compared to the IP address from which it is originating.
Read Also:
- r-commerce
Short for relationship e-commerce, it is electronic commerce with an emphasized focus on the relationship between the merchant and the consumer, as opposed to just focusing on selling the product. May also be seen written as R-commerce or rcommerce.
- rackmount
The term rackmount is used to describe electronic equipment and devices designed to fit industry-standard-sized computer racks and cabinets (19″ wide). Rackmount devices are also standard 1.75 inch units. Rackmount is measured in U.
- rack and stack
A term commonly used by deployment technicians in reference to the assembly of computer hardware within a system, computer rack or computer cabinet.
- radio buttons
In graphical user interfaces, groups of buttons, of which only one can be on at a time. When you select one button, all the others are automatically deselected. Compare with check box, which allows you to select any combination of options.
- ragged
In text processing, ragged means not aligned along a margin. The opposite of ragged is flush or justified. For example, the following text has a ragged right margin: This text has ragged right margin because each line ends at a different spot. Most word processors allow you to choose between ragged and justified margins.