Exam Prep Questions

Question 1 What is the name of the device that allows four surveillance camera images to be viewed on a monitor at the same time?
  • A. A video splitter

  • B. A modulator

  • C. A quad switcher

  • D. A photoelectric sensor

A1: Answer C is correct. A quad switcher is designed to provide simultaneous viewing of four cameras on one monitor using a split-screen display. Answer A is incorrect because a video splitter is used with TV antenna systems and is not an active component required with four-camera surveillance systems. Answer B is incorrect because a modulator is not required for viewing images. Answer D is incorrect because a photoelectric sensor is used to monitor ambient light conditions for security systems and is not required as a ...

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