All network devices have some component that operates at layer 1. Only hubs and repeaters operate entirely at layer 1.
Hubs and repeaters operate at the Physical Layer of the OSI Model. The Physical Layer is the first layer of the OSI Model.
1. Repeaters (Operate at the OSI Physical Layer).2. Bridges (Operate at the OSI Data Link Layer).3. Routers {and Brouters} (Operate at the OSI Network Layer).
If devices are within the same network then they operate at the second layer.
Hubs are a physical layer (layer 1) device; most switches operate at the Data Link layer (Layer 2) of the OSI model.
Gateway
No. Only protocols that users can see on their screen are considered Presentation Layer based. Hubs and repeaters operate on the physical layer, because it doesn't do anything with the data, it simply forwards it.
Gateway network device
Repeaters operate at the physical layer of the OSI model.
at both physical layer 1 and Data Link layer 2
It uses data modulation techniques at teh physical layer (layer 1).
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.
The physical layer is not considered a functional area for a router. While routers operate primarily at the network layer (Layer 3) of the OSI model to route packets between different networks, the physical layer (Layer 1) deals with the transmission of raw bitstreams over a physical medium. Routers do not manage physical connections directly; instead, they rely on other devices like switches and cables to handle the physical layer functions.