Ajunior administrator is having issues connecting to a router's console port using a tia/eia 568b standard cable and a usb serial to rj-45 adapter, despite verifying terminal settings. what is the issue? a. the usb standard is incompatible with the serial connection used by the console port. b. router console ports are only used when connected to other routers. c. the router console port is providing an ethernet connection, instead of a serial connection. d. the cable must be a rollover cable.