| Acronym | Meaning |
| ASIC | Application-Specific Integrated Circuit |
| ABEND | Abnormal End |
| AN | Active Network |
| PGM | Pragmatic General Multicast / Pretty Good Multicast |
| IAHC | Internet International Ad Hoc Committee |
| CORBA | Common Object Request Broker Architecture |
| BIOS | Basic Input/Output System |
| CERT | The CERT Coordination Center |
| ISO | International Organization For Standardization |
| CMIP | Common Management Information Protocol |