| Acronym | Meaning |
| PDC | Primary Domain Controller |
| DTD | Document Type Definition |
| SMTP | Simple Mail Transfer Protocol |
| BAPI | Business Application Programming Interface |
| CERT | Character Error Rate Testing (European Organization For Nuclear Research) As In, Large Hadron Collider |
| IAS | Internet Authentication Service |
| UNC | Universal Naming Convention |
| ESP | Encapsulating Security Payload |
| NSF | National Science Foundation |
| MFLOPS | Millions Of Floating Point Operations Per Second |