What tool would a technician use to attach a new 110-style keystone jack module to a cable?

The punchdown tool is specifically designed for attaching 110-style keystone jack modules to twisted-pair cabling. This tool allows the technician to securely connect individual wires from the cable to the terminals in the keystone jack, ensuring proper contact and signal integrity. The punchdown action effectively drives the wire into the terminal while trimming off any excess wire, which is crucial for a clean and effective installation.

In the context of this task, other tools like a screwdriver would not provide the necessary connection method needed for the keystone jack, as the punchdown tool's design is aimed at making a secure, low-resistance connection. Cable strippers, while useful for preparing cables by removing insulation, do not make connections and cannot attach the wire to the keystone jack. Wire cutters are primarily used for cutting cables to length and do not serve the purpose of connecting the wires to the module. Therefore, the punchdown tool is the correct choice for this specific application.