Which standard or concept is commonly used to connect devices in a network with Ethernet?

• A. Ethernet
• B. Token Ring
• C. Wi-Fi
• D. Bluetooth

Answer: (A)

Ethernet is the wired local area network standard used to connect devices. It defines how data is physically transmitted over copper or fiber and how devices on a LAN address and frame data so they can communicate. In most wired networks, devices connect via Ethernet interfaces and switches or hubs, making Ethernet the practical foundation for connecting devices with cables. Token Ring is an older, now mostly obsolete LAN technology that used token-passing. Wi‑Fi covers wireless networking, not a wired Ethernet connection, and Bluetooth is a short-range wireless technology for peripherals, not the typical method for building a LAN. So the best fit for connecting devices in a network with Ethernet is Ethernet itself.