What is the main purpose of an Ethernet cable?

The primary function of an Ethernet cable is to connect devices to a network, facilitating data transfer. Ethernet cables serve as the backbone of local area networks (LANs), allowing computers, printers, routers, and other networked devices to communicate with each other and share resources such as files and internet connections. Through these physical connections, Ethernet cables enable reliable and high-speed data transmission, which is essential for many business applications that require continuous and stable connectivity.

In contrast, connections for keyboards to computers are typically achieved through USB cables or wireless connections, not Ethernet. Powering devices remotely is usually managed through Power over Ethernet (PoE) but is not the inherent purpose of the cable itself. Enhancing wireless signals is the role of devices like wireless repeaters or access points, rather than the Ethernet cable. Therefore, the correct identification of the Ethernet cable's function as a means to connect devices for data transfer underscores its importance in networking environments.