Which of the following is used to increase the voltage (amplitude) level of an analog signal at the beginning of a long cable run?

The correct answer is the term commonly associated with amplifying signals in audio and video systems, ensuring that they maintain signal integrity over long distances. By increasing the voltage or amplitude of the analog signal at the beginning of a cable run, this method helps prevent signal degradation, noise interference, and loss of clarity.

Gain refers to the ratio of output to input signal levels, effectively boosting the signal strength to compensate for losses that occur during transmission through long cables. In practice, a device with gain is often implemented right at the source to enhance the signal before it travels any further along the cabling.

The other options do not serve this specific function effectively. Peaking, for instance, refers to enhancing specific frequency ranges in a signal but does not denote an overall increase in voltage. Line Drivers are specialized devices used to drive signals over long distances, but the term itself is less about the concept of gain and more about the device designed for such purposes. Matrix Switchers, meanwhile, are used for routing multiple inputs to multiple outputs but do not inherently amplify the signals themselves before transmission.