Some devices share the same set of wires. This connection mode is referred to as a Bus.

• A. Bus
• B. Train
• C. Multi-point connection
• D. Ring

Answer: (A)

Sharing devices on the same set of wires describes a bus topology, where a single communication channel runs along the line and every device taps into it. Any device can transmit onto the bus, and all devices on the line receive the signal; to manage access, devices listen before transmitting and wait their turn, a method known from classic Ethernet as CSMA/CD. Terminators at both ends help prevent reflections and keep signals clear along the cable. This setup contrasts with a ring, where data moves around a loop with a token, and with other layouts like point-to-point or star. A multi-point connection is a broad idea of several devices on a shared medium, but the standard term for this shared-wire arrangement is a bus.