PawPrint.net Glossary of Terms

A protocol for asynchronous data communications that represents the evolution from x.25 and Frame Relay. It includes specific considerations for QoS and allows for different packet priority and size.

The Set of rules to provide system management tools to monitor activity and create messages/alerts as required. Network devices that employ SNMP are frequently referred to as "Managed" devices.

A compressed graphic format suited for flat color images (illustrations) and drawings. It compresses images by referencing areas of the same colour thus it is less suitable then JPEG for photographic images (where there are colour gradients)

Originally created by CompuServ it was the subject of proposed law suits and patent discussions which have largely been dropped.

ln [options] sourcename [destname]

ln [options] sourcenames destdirectory



Create pseudonyms (links) for files, allowing them to be accessed by different names. In the first form, Link sourcename to destname, where destname is usually a new filename, or (by default) the current directory. If destname is an existing file, it is overwritten; if destname is an existing directory, a Link named sourcename is created in that directory. In the second form, create links in destdirectory, each l...

A measure of image resolution - typical screen resolution is 72 dip whereas printing presse print at 300dpi.

When measuring the resolution of an image you need to know both the physical size and the resolution (in DPI) to acertain the actual amount of data. For example:

An image that is 10 inches wide...

at 72dpi would be 720 pixels wide
at 300dpi would be 3000 pixels wide (roughly 3.5 times the resolution)

A text file stored in the top level directory of a web site which is used to tell the Robots (spiders) what parts of a web site should, and should not be indexed.