Which of the following is used to terminate a Cat 6 cable to an RJ45 connector?

A crimper is a specialized tool designed to join two pieces of material by deforming one or both to hold the other. In networking, an RJ45 crimping tool is used to secure the RJ45 connector onto the stripped and arranged wires of a Cat 6 cable, establishing the electrical connection.

A cable tester verifies the continuity and correct wiring of a terminated cable, it does not perform the termination itself.

A punchdown tool is used to terminate wires into punchdown blocks or keystone jacks, not directly onto an RJ45 connector.

A wire cutter is used to cut wires to the correct length and strip insulation, but it does not perform the crimping action needed to secure the connector.