santiago chose to use a crossover cable to connect the two computers, and the cable modem connects to santiago’s computer using a usb cable. both computers are constantly plagued with pop-up ads and worms, so santiago has come to you for some advice. he’s heard he should use a router, but he doesn’t know what a router is or how to buy one. you immediately show him how to turn on windows firewall and windows defender on both pcs to control the pop-ups and malware, but you know he really needs a better solution. what equipment (including cables) do you recommend he buy to implement a hardware router with a firewall?