The question asks us to identify the type of cable used in a bus topology that connects several devices and has terminators at both ends to prevent signal bounce. Let's explore the options to understand which one fits:
Based on the analysis, the correct answer is Backbone, as it is the cable type that aligns with the description given in the question.
(1) Drop Line: In bus topology, a drop line is a cable that connects a device to the main cable, but it is not the main cable that is terminated.
(2) Taps: Taps are connectors used to attach devices to the bus cable. They are not the main cable itself.
(3) Analog cable: The type of cable is not as important as the function. While technically descriptive, it isn't the specific term for the main cable in bus topology.
(4) Backbone: The backbone is the main cable in a bus topology that all devices connect to. It's terminated at both ends to prevent signal reflection (bounce).
Therefore, the long cable that helps connect several devices in a bus topology, having terminators at both ends to prevent signal bounce, is known as the (4) Backbone.