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Modem stands for
- a)A type of secondary memory
- b)Modulator demodulator
- c)Mainframe operating device memory
- d)None of the above
Correct answer is option 'B'. Can you explain this answer?
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Modem stands fora)A type of secondary memoryb)Modulator demodulatorc)M...
Modem stands for Modulator Demodulator
Modulator and Demodulator
Types of Modems
Functions of Modem
A modem is a device used to connect a computer to the internet or other networks. The term modem is an acronym for Modulator-Demodulator. It is a hardware device that converts digital signals to analog signals for transmission over telephone lines and then converts the analog signals back to digital signals at the receiving end.
Modulator and Demodulator
Modulation is the process of converting digital signals into analog signals. A modem modulates digital signals into analog signals for transmission over telephone lines. Demodulation is the process of converting analog signals back into digital signals. A modem demodulates analog signals received over telephone lines into digital signals for use by computers or other digital devices.
Types of Modems
There are different types of modems available in the market, such as:
- Internal Modems: These are installed inside a computer and are connected to the motherboard.
- External Modems: These are standalone devices that can be connected to a computer via USB or Ethernet ports.
- Wireless Modems: These modems use wireless technology to connect to the internet.
Functions of Modem
The main functions of a modem are:
- Modulating digital signals into analog signals for transmission over telephone lines.
- Demodulating analog signals received over telephone lines into digital signals.
- Establishing a connection with the internet or other networks.
- Providing security features such as firewalls and encryption for secure data transfer.
In conclusion, a modem is a device that connects computers or other digital devices to the internet or other networks. It converts digital signals into analog signals for transmission over telephone lines and then converts the analog signals back into digital signals at the receiving end. The term modem stands for Modulator-Demodulator.
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