Recommend few books for DCIO (Deputy Central Intelligence Officer) exam's preparation.

Recommend few books for DCIO (Deputy Central Intelligence Officer) exam's preparation.

thank you..

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refer books as per this syllabus-

Syllabus: Syllabus of the Test comprises the following :- Scientific temper relating to basic understanding of Science including everyday observation & Experience, Instrumentation, Fundamentals of Basic Electronics, Fundamentals of Computerization and Network, Aptitude Data interpretation, Communication Skills, Basic Questions on Maintenance, Current events regarding Science and Technology, Data & image interpretation, Fundamentals of information security