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physical layer Layer 1
Assuming you are using the OSI Modem a router sits on Layer 3: Network
TCP/IP because the osi model has seven layer but in tcp/ip only four layers and most important is that the tcp/ip model is reduce the function of osi model.
Answer: It's a model, not a protocol. The OSI model is a governing model of standards in which protocols are derived or fit into in the case of legacy models. The OSI model was developed by ISO(International Standards Organization). The OSI model encapsulates many popular legacy and current protocols including TCP/IP, IPX/SPX, and NetBIOs derivatives, including Microsoft's NetBEUI. The OSI model also includes specifications that allows communications engineers whos specialties are on different layers of the OSI model to communicate and accelerate delivery of better communications to the end user. So from DSL, modem, satellite to your web browser, the OSI model applies. e
First modem is the one device that connect the telephone with compute. But Now the days modem is used direct in the laptop and we are use the internet with help of the modem. Modem is provide us lot of facilities to use the new any were and very helpful for us. So this is a some important point of the modem.. these few words are written by SSS
Physical
OSI
Data link Layer
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.
The OSI Model
Offcourse osi..... TCP/IP is an implementation of osi....
OSI model