Final answer:
To configure a new router by connecting a workstation to its console port, a rollover cable is most commonly used because of its reversed pinout design that fits console connections.
Therefore, the correct answer is: option 'rollover'.
Step-by-step explanation:
A rollover cable is a type of null-modem cable that is used to connect a computer terminal to a router's console port.
When connecting a workstation to the router's console port for configuration tasks, you would most likely use a rollover cable. This type of cable, also known as a Cisco console cable, has a unique wiring where the pinouts on one end are reversed on the other, making it suitable for console connections.
Unlike straight-through cables (used for connecting different types of devices), or crossover cables (used for connecting similar devices), or RG6 coaxial cables (used for cable television), the rollover cable is specifically designed for this purpose.