Which of the following components are data communication equipment? I. Scanner ll. Hub lIl. Modem

I and III are data communication equipment. A scanner is a device that captures images from photographs or documents and converts them into digital data that can be processed by a computer. A modem (short for modulator-demodulator) is a device that converts digital data into analog signals for transmission over analog networks (such as telephone lines) and vice versa. Modems are used to connect computers to the internet. A hub is a networking device that allows multiple devices to be connected together and share network resources. A hub does not modify the data being transmitted, but simply repeats the same data to all connected devices. So, a scanner is used to convert physical images into digital data and a modem is used to convert digital data into analog signals for transmission over analog networks.