Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. That is the definition of Layer 1.
physical layer Layer 1
hub work at physical layer of osi model
Layer 1 - the physical layer
An OSI modem refers to a modem that operates within the Open Systems Interconnection (OSI) model, which is a framework used to understand and implement network protocols in seven layers. Modems typically function at the physical layer (Layer 1) and the data link layer (Layer 2) of the OSI model, facilitating the modulation and demodulation of signals for data transmission over communication channels. Essentially, an OSI modem translates digital data from a computer into analog signals for transmission over phone lines or cable systems and vice versa.
TheHub work on layer 1 i.e. Physical layer of OSI Model
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.
If you mean the OSI reference model, that's layer 1 (physical).If you mean the OSI reference model, that's layer 1 (physical).If you mean the OSI reference model, that's layer 1 (physical).If you mean the OSI reference model, that's layer 1 (physical).
First layer of the OSI model covers the cabling and electrical signaling. The first layer of OSI model is the physical layer. The physical layer also decides the transmission mode and physical media.
All 802.x map to 1. Data Link 2. Physical layer in OSI model.
physical layer
Assuming you are using the OSI Modem a router sits on Layer 3: Network
The Physical layer