Jerry
Preview
Open in TheBrain
Welcome! (start here)
Messages Must Be
Personal
Big Issues
Key Tech Issues
Time
The Past
Memory
Mnemonic Devices
PDNTSPA (Physical, Data Link, Network, Transport, Session, Presentation, Application
Attachments
PDNTSPA
Parents
Mnemonic Devices
Open Systems Interconnect Seven-Layer Model (OSI)
Children
2022-02-03 OGM Check-in Call
2025-07-10 OGM Call (xlnt)