The LC (lucent connector) is a fiber optic connector known for its compact, high-density design which uses a push-pull latching mechanism allowing for quick and easy insertion and removal in tight spaces. The SC (subscriber connector) also has a push-pull design but is not characterized by high density. The MTP/MPO (Multi-fiber Termination Push-on/Multi-fiber Push On) are correct for high-density applications but are typically used for connecting multiple fibers simultaneously. The BNC (Bayonet Neill-Concelman) connector is used with coaxial cables, not fiber optics.