Science & Technology › Computer & Information Technology – UPSC Prelims PYQs

55 questions · 1995–2026 · answers as per the UPSC key · page 2 of 2

Take test Free Study this topic: Science and Technology
By year: UPSC 2026 (4)UPSC 2025 (2)UPSC 2024 (1)UPSC 2022 (6)UPSC 2020 (5)UPSC 2019 (5)UPSC 2018 (5)UPSC 2017 (2)UPSC 2016 (5)UPSC 2015 (1)UPSC 2014 (1)UPSC 2011 (3)UPSC 2010 (2)UPSC 2009 (1)UPSC 2007 (2)UPSC 2006 (2)UPSC 2005 (1)UPSC 2004 (2)UPSC 2000 (2)UPSC 1999 (1)UPSC 1997 (1)UPSC 1995 (1)
UPSC 2000 · Q98 · Science & Technology › Computer & Information Technology · Save

The memory of a computer is commonly expressed in terms of Kilobytes or Megabytes. A byte is made up of

(a) eight binary digits
(b) eight decimal digits
(c) two binary digits
(d) two decimal digits
Show answer
Answer: (a) eight binary digits
UPSC 2000 · Q101 · Science & Technology › Computer & Information Technology · Save

For reproducing sound, a CD (Compact Disc) audio player uses a

(a) quartz crystal
(b) titanium needle
(c) laser beam
(d) barium titanate ceramic
Show answer
Answer: (c) laser beam
UPSC 1999 · Q102 · Science & Technology › Computer & Information Technology · Save

Assertion (A): Information technology is fast becoming a very important field of activity in India.

Reason (R): Software is one of the major exports of the country and India has a very strong base in hardware.

(a) Both A and R are true, and R is the correct explanation of A
(b) Both A and R are true, but R is not a correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Show answer
Answer: (c) A is true, but R is false
UPSC 1997 · Q40 · Science & Technology › Computer & Information Technology · Save

The world’s fastest computer has been able to perform (as of Dec. 1996)

(a) 106 operations per second
(b) 109 operations per second
(c) 1012 operations per second
(d) 1015 operations per second
Show answer
Answer: (c) 1012 operations per second
UPSC 1995 · Q104 · Science & Technology › Computer & Information Technology · Save

The technique used to transmit audio signals in television broadcasts is

(a) Amplitude Modulation
(b) Frequency Modulation
(c) Pulse Code Modulation
(d) Time Division Multiplexing
Show answer
Answer: (b) Frequency Modulation