What is the main cable that connects to all the nodes/devices on a physical Bus topology?

• A. Trunk Cable
• B. Backbone Cable
• C. Patch Cable
• D. RJ-45 Cable

Answer: (A)

In a physical bus topology, all devices share a single communication path—the main conduit that runs along the network. This central line is called the trunk cable because it carries signals to every node connected to the bus. Each device taps into this trunk with a drop connection, and proper termination at both ends prevents signal reflections. A patch cable is only used to connect a device to the trunk or a wall outlet, not the main path itself. RJ-45 refers to a connector type for twisted-pair cables, not the main bus medium, and while a backbone cable is a term used for main lines in some contexts, the standard term for this setup is trunk cable.