Web Hosting Glossary
The following glossary defines 278 terms
related to web hosting.
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Please do not reproduce without permission.
Use the form at the bottom of this page to submit new terms you'd like to see defined here.
0 3 4 A B C D E F G H I J K L M N [ O ] P R S T U V W X Z
Terms Letter: O
OC-1, OC-3, OC-12, OC-24, OC-48- Optical Carrier transmission speeds, used in fiber optic networks conforming to SONET standard. OC-1 is 51.85 Mbps. Higher levels are multiples of that speed.
ODBC- Open DataBase Connectivity - A Microsoft standard for accessing different database systems from Windows, for instance Oracle or SQL
Offline- When you are not Online :). In other words when your computer is not connected to the internet.
Online- When your computer is connected to the Internet or a network and communicates with other computers.
Open relay- A SMTP server that allows sending email messages without the need of any kind of authorization. It is a SPAMmers heaven.
Operating system- Sometimes abbreviated as "OS", the program that manages all the other programs in a computer. UNIX, Windows XP, Linux, Free BSD, and MAC OS/X are all examples of operating systems.
OSI- Open Systems Interconnection. The OSI Reference Model is a seven-layer network architecture model of data communication protocols developed by ISO and ITU