Which of the following are common types of fiber optic connectors?

The correct answer identifies SC, LC, ST, and MTP/MPO as common types of fiber optic connectors. These connectors are specifically designed for use with fiber optic cables and are widely recognized in the field of telecommunications and data networking.

SC (Subscriber Connector) is known for its push-pull mechanism and is commonly used in high-density applications. LC (Lucent Connector) is a smaller form factor connector that is popular in fiber optic networks due to its compactness, allowing for more connections in smaller spaces. ST (Straight Tip) connectors utilize a bayonet style coupling for secure connections and were among the first types of fiber optic connectors. MTP (Multi-fiber Termination Push-on) and MPO (Multi-fiber Push-on) connectors are used for high-density environments where multiple fibers are required to be connected in a single interface.

In contrast, the other options include connectors that are primarily used for copper cable connections or are not meant for fiber optics. RJ45 is a standard connector for Ethernet cables, USB is primarily for connecting peripherals and devices, and HDMI is used for transferring high-definition audio and video. RCA and VGA are also not relevant to fiber optics, as they are used for analog video and audio connections. Thus, only the connectors