Switches / Bridges and hubs work at data link layer, but there are layer three switches which operate at network layer. Dhruv
Switches work in Layer 2 (Data Link) of OSI model.
Layer 4 : The Transport Layer
Layer 7: The Application Layer
physical layer Layer 1
Data Link Layer
application
Ethernet switch fits on osi physical layer
hub work at physical layer of osi model
PGP works at the Layer 6 - Presentation level.
physical layer Layer 1
Layer 4 : The Transport Layer
Layer 7: The Application Layer
Data Link Layer
application
It operates on the data link layer of the OSI model (level 2). The switch creates a separate collision domain for each port. Although some switches operate on level 3 of the model and are called multi-layer switches.
Layer 2.
It depends on what kind of model it is, but in the model for computer 321O, it is on the layer between trhe keyboard and the behind screen, and there is a button with the osi code and there says everything.
Layer 2, Data Link.