• SAA Systems Application Architecture
• QABME Set Asynchronous Balanced Mode Extended
• SAP Service Access Point / Service Advertising Protocol
• SATAN Security Analysis Tool for Auditing Networks
• SCAM SCSI Configuration AutoMagic / SCSI Configured AutoMatically
• SCC Serial Communications Controller
• SCMS Serial Copy Management System
• SCO Santa Cruz Operations
• SCS System Communication Services
• SCSI Small Computer Systems Interface
• SD Send Data
• SDC Secondary Domain Controller
• SDD Software Description Database
• SDI Single Document Interface
• SDK System Design Kit / System Development Kit
• SDLC Synchronous Data-Link Control
• sea self-extracting archive
• SEAM Saber Enterprise Application Manager
• SED Stream EDitor
• SEF Source Explicit Forwarding
• SGI Silicon Graphics Incorporated
• SGML Standard Generalized Markup Language
• SGMP Simple Gateway Management Protocol
• shar shell archives
• SHED Segmented Hypergraphics EDitor
• SHG Segmented HyperGraphics
• SIG Special Interest Group
• SIMM Single In-line Memory Module
• SIPS SMDS Interface Protocol
• SIR Serial InfraRed
• SLIP Serial Line Internet Protocol
• SM Standby Monitor
• SMART Software Metering and Resource Tracking
• SMB Server Message Block
• SMDS Switched Multimedia Data Services / Switched Multimegabit Data Service
• SMFA Specific Management Functional Area
• SMI Structure of Management Information
• SMP Symmetric MultiProcessing
• SMS Storage Management Services / Systems Management Server
• SMTP Simple Mail Transfer Protocol
• SNA Systems Network Architecture
• SNADS Systems Network Architecture Distribution Services
• SNAP Sub-Network Access Protocol
• SNI Subscriber Network Interface
• SNMP Simple Network Management Protocol
• SOH Start Of Header
• SOHO Small Office Home Office
• SOM System Object Model
• SONET Synchronous Optical NETwork
• SP Stack Pointer
• SPA Software Publishing Association
• SPARC Scaleable Performance ARChitecture
• SPEC Systems Performance Evaluation Cooperative
• SPOOL Simultaneous Peripheral Operations Off-Line
• SPP Sequenced Packet Protocol
• SPR Statistical Pattern Recognition
• SPX Sequenced Packet EXchange
• SQL Structured Query Language
• SR Source Routing
• SRAM Static Random Access Memory
• SRBs Source Routing Bridges
• SRF Specifically Routed Frame
• SRI Stanford Research Institute
• SRT Source Routing Transparent
• SSAP Source Service Access Point
• SSL Security Systems Layer
• STAR Shareware Trade Association and Resources
• STE Spanning Tree Explorer
• STID STation ID
• STN Super-Twisted Nematic
• STP Shielded Twisted Pair
• SUA Stored Upstream Address
• SVC Switched Virtual Circuit
• SVD Simultaneous Voice and Data
• SVGA Super Video Graphics Array
• SWAIS Single Wide-Area Information System