View the new MCQs of Computer Science for the upcoming 2021 examinations at Computer MCQs Class 9 NEW
Category: Computer Science MCQs Class 9
Computer Science solved multiple choice questions (MCQs) for class 9 with answers.
Which was the first computer that used electromagnetic relays?
(A) Mark-I
(B) Complex calculator
(C) Supercomputer
(D) Mainframe
Answer: (A) Mark-I
A hard disk is also called a _____.
(A) Compact disk
(B) Winchester disk
(C) System disk
(D) Changeable disk
Answer: (B) Winchester disk
Which of the following is NOT an executable command?
(A) CLS
(B) REM
(C) REN
(D) COPY
Answer: (B) REM
Interpreter is a type of _____.
(A) System software
(B) Service software
(C) Utility software
(D) Application software
Answer: (A) System software