What is an auxiliary system?, A. A device used only for entertainment, B. A system that replaces electronic components permanently, C. A device used as a substitute or reserve in case of need, D. A system used only for communication, During a fire emergency in a school building, the main power supply suddenly fails. Which auxiliary system is MOST important to activate to alert all occupants immediately?, A. Cable television system, B. Fire alarm and protection system, C. Music distribution system, D. High‑speed Internet system, A residential building wants to provide television, FM radio, and internet services using coaxial cables instead of antennas. Which system should be installed?, A. Intercommunication system, B. Building Management System, C. Cable Television (CATV) system, D. Fire protection system, In a hospital, nurses need a reliable way to communicate quickly between rooms without using mobile phones. Which auxiliary system is the MOST appropriate for this purpose?, A. CATV system, B. Fire alarm system, C. Building Management System, D. Intercommunication device (intercom), While reading an electrical plan, a learner sees several graphic symbols representing resistors, switches, and alarm bells on a single‑line diagram. What is the MAIN purpose of these graphic symbols?, A. To decorate the electrical layout, B. To replace written instructions, C. To represent electronic components used in the system, D. To show the internet connection speed

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