XYZ Corp is considering a new network. Engineers in design shop should have connections to accountants and salespeople in front office but all routes between two areas should traverse shop floor, where welders and metal-stamping equipment prepare potent amouts of EMI and RFI. Given that both engineering and front office areas use 10BaseT (twisted-pair Ethernet), how might you interconnect those two areas? Explain what meduim guarantees immunity from interference?