Answer: Fiber optic cabling usually needs interduct to protect it as the cable is fragile and expensive if you break it
On half-duplex links, the segment length cannot exceed 412 m. Either SC, MIC, or ST fiber optic connectors can be used, but SC is recommended.As an example, a 100BASE-FX fiber optic segment using a typical multimode fiber optic cable is limited to segment lengths of 412 meters (1351.6 feet) in half-duplex mode.