The correct answer is "option 3".Switch is a device that takes data sent from one network device and forwards it to the destination node based on MAC address.Switch is a layer 2 device that works using MAC address.Additional InformationHub is a central device in a network that allows multiple devices or computers to connect with each other using Hub's Ethernet ports.Modem stands for Modulator Demodulator, is a hardware component that allows the device to connect to the internet.It modulates i.e. convert the analog signal to digital data (1 or 0) & demodulates i.e. convert digital data to an analog signal.Gateway is a hardware device that enables flows of traffic in & out of the network & acts a "gate" between two networks.