What connector type is used at the end of an Ethernet UTP cable?

The connector type used at the end of an Ethernet UTP (Unshielded Twisted Pair) cable is the RJ45 connector. This connector is designed specifically for networking applications and is commonly used in local area networks (LANs) to connect devices such as computers, routers, and switches.

The RJ45 connector is characterized by its rectangular shape and has eight pins, allowing it to accommodate the four twisted pairs of wires found in standard Ethernet cabling. This design supports the transmission of data at various speeds, including 10/100/1000 Mbps, which are the common rates used in Ethernet networking.

In contrast, the other options refer to different types of connectors used for other purposes. For instance, the DB9 connector is typically used for serial communication, while the USB connector is designed for connecting peripherals to computers. The LC connector is commonly used in fiber optic cables for high-speed data communication. Each of these connectors serves specific functions that do not relate to Ethernet UTP cabling, making the RJ45 the correct and appropriate choice for that application.