Answer:
E. Modem
Explanation:
A network comprises of two or more interconnected devices such as computers, routers, switches, smartphones, tablets, etc. These interconnected devices avail users the ability to communicate and share documents with one another over the network.
In order for a network to exist or be established, the devices must be turned (powered) on and interconnected either wirelessly or through a cable (wired) connection.
In Computer Networking, a node is the physical device that make up a network and are capable of sending, receiving, creating and storing data in communication.
Examples of network nodes are routers, hubs, computer, switches, smartphone, printers, modem, etc.
A modem is a networking device that converts the signals to and from the wires such as a telephone line, so that the data can be sent and received by the computer.
Basically, a modem is an abbreviation for modulator and demodulator and as such it is designed to convert signal from one network device to signals that another network device such as a computer can understand or read.
When sending a signal (data) over a network, a modem converts (modulate) digital data signal to an analogue signal and transmits it over a telephone line or other communication lines. Also, when receiving an analogue signal, a modem converts (demodulate) the signal to a digital data signal.
