What Is OSI Model?
A seven-layer conceptual framework (Physical, Data Link, Network, Transport, Session, Presentation, Application) used to describe how data moves through a network.
OSI Model across 3 exams
OSI Model appears on the following exams. Each defines it in the context candidates are tested on:
- CCST Networking
- A seven-layer conceptual framework (Physical, Data Link, Network, Transport, Session, Presentation, Application) used to describe how data moves through a network.
- Network+
- A seven-layer conceptual framework describing how data moves through a network, from physical transmission up to application-level communication.
- CCNA
- A seven-layer conceptual framework (Physical, Data Link, Network, Transport, Session, Presentation, Application) used to describe how network communication functions and to standardize troubleshooting and protocol design.