| SBM | Subnet Bandwidth Management – works at the data link layer – or LAN level. Can assign up to 8 levels of priority. |
SCP |
Service Class Provider - The provider or server of a service (service class) |
SCU |
Service Class User - The client or user of a service (service class) |
SDLC |
Synchronous Data Link Control |
| SDTV | Standard-definition television or SDTV refers to television systems that have a resolution that meets standards but not considered either enhanced definition or high definition. |
SFD |
Start Frame Delimiter |
Singularity |
A region in space-time at which matter is infinitely dense. It is also a Microsoft research project on a new operating system (that's scary in itself!). |
SLD |
Second Level Domain, the portion of the DNS that identifies main site within the TLD – 'aami' in www.aami.org is an example of a SLD. |
SNA |
Systems Network A |
SNAFU |
A chaotic or confused situation. As an adjective: In a state of confusion or chaos. Situation Normal All Messed Up. |
SOL |
Surely Out of Luck |
SONET |
Synchronous Optical NETwork |
SOP |
Service Object Pair – The combination of the Service Class and the Information Object Definition. This is key for interoperability. "Print X-ray image" and "send CT image" are two examples of SOPs. |
| SPI | Samples per Inch refers to scanner and image resolution. The higher the SPI, the higher the resolution. |
SPID |
The Service Profile IDentifier-A number assigned to a fully initializing ISDN terminal that uniquely identifies the ISDN terminal at layer 3 of the D-channel signaling protocol (AKA your ISDN network ID). |
Spoofing |
Attacks that make an unauthorized user or system appear to be an authorized user or system by utilizing an authorized system's addresses or credentials. In other words, impersonating an authorized user |
Spyware |
Unwanted applications that are loaded onto your PC to collect personal information (cookies, favorites URLs, etc) that can be used by direct marketers or hackers (or is that the same thing?). In this way a hacker can find what URLs are trusted sites by your computer. With IP spoofing, they can then infiltrate your PC by making it think that it's connected to a trusted site. |
SRP |
Secure Remote-Password Protocol – Secure authentication protocol for user verification |
SSH |
Secure SHell – Software that allows secure login and use of remote network systems |
SSID |
Service Set Identifier, a unique character set or network name, in the header of WLAN packets as a sort of password when a mobile device tries to connect to the base station access point. The SSID distinguishes one WLAN from another. All devices wanting to connect to a specific WLAN must use the same SSID. Any device that cannot provide the SSID will not be permitted to join the network. Because an SSID can be sniffed in plain text from a packet, it does not necessarily supply any security to the network. |
SSL |
Secure Sockets Layer – Transport layer security protocol primarily used to authenticate and secure channels between a Web browser client and a Web server |
Resources: IT World Glossary
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