Final answer:
The most commonly used type of patch panel is the Modular patch panel, which facilitates the organization and connection of cables in network infrastructure.
Step-by-step explanation:
The most commonly used type of patch panel currently in use is the c) Modular patch panel. Modular patch panels are versatile and widely used in network infrastructure to organize and connect cables that lead to different equipment or outlets.
They usually consist of a metal frame that houses a series of ports where cables can be plugged in. Each port corresponds to a cable that runs to a specific endpoint like a computer or a router. By using modular patch panels, network administrators can easily add, remove, or change connections as network requirements evolve.