ITI ICTSM is a simple e-Book for ITI Information & Communication Technology System Maintenance ICTSM JOB Interview & Apprentice Exam. It contains objective questions with underlined & bold correct answers MCQ covering all topics including all about the latest & Important about safety and environment, use of fire extinguishers, Resistors and Soldering, De-soldering practice,Inductors, measure Inductance and uses of Transformer, Capacitor, types of Transistors and use it as Amplifiers, voltage, frequency, modulation of modulator/ transmitter