Which statement is not true? / » Introduction to Computer solved MCQs / By admin Question: Which statement is not true? A. Mac is an operating system. B. Fedora is a type of linux operating system. C. Postgres is a type of DBMS. D. In Real time operating system, response time is not at all crucial. Answer» d. In Real time operating system, response time is not at all crucial. Note: The above multiple-choice question is for all general and Competitive Exams in India.