A user needs to connect their home network to the internet service provider (ISP). Which device is required to translate the signals between the home network and the ISP's infrastructure?
Router
Switch
Modem
Hub
A modem (modulator-demodulator) is the device that connects a local network to an Internet Service Provider (ISP). It translates the digital signals from the local network into a format that can be transmitted over the ISP's infrastructure (like cable, fiber, or DSL) and vice-versa. A router directs traffic between the local network and the modem, allowing multiple devices to share the internet connection. A switch is used to connect multiple wired devices within the same local network, forwarding data only to the intended recipient device. A hub is a simpler, older device that also connects devices on a local network, but it broadcasts all data to every connected device, which is inefficient.
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