DSSSB Librarian Exam (Post Code 10/17) held on 01 September 2019 Solved Questions with Explanations (21-30)
21. Which one is the real process gaining knowledge?
Answer: (B) Data - Information - Knowledge
22. Which one is the first generation computer?
Answer: (D) ENIAC
Notes: ENIAC (Electronic Numerical Integrator and Computer), designed and developed by John Mauchly and J. Presper Eckert of the University of Pennsylvania, United States in 1945 was the first electronic general-purpose digital computer.
23. Which is the most important part of computer terminal?
Answer: (B) CPU
Notes: The most important part of all computers is the CPU (central processing unit).
24. Keyboard, mouse, scanner and cursor etc. of computer are the __.
Answer: (A) Input devices
25. Arrange the following in increasing order of their size: (a) Bit (b) Byte (c) Gigabyte (d) Kilobyte (e) Megabyte (f) Terabyte
Answer: (B)
26. Binary system of computers consists __.
Answer: (A) Two digits
Notes: Computers operates in binary which is a numeric system that only uses two digits - 0 and 1. This means they store data and perform calculations using only zeros and ones.
27. In which year, computer was used first in India?
Answer: (C) 1955
Notes: In India, the first computer HEC-2M was imported & installed at Indian Statistical Institute (ISI), Calcutta in 1955 by the initiative of P C Mahalanobis.
28. The internal memory units of computer are __.
Answer: (B) RAM and ROM
Notes: Computer memory are of two types: (i) Primary memory - often called internal memory or system memory which is located close to the CPU on a computer. Primary memory includes RAM (Random Access Memory) and ROM (Read Only Memory). (ii) Secondary memory - is usually physically located within a separate storage device, such as a hard disk drive or solid state drive (SSD).
29. Windows, Linux, Unix etc. are examples of __.
Answer: (D) Operating systems
30. What is full form of DBMS?
Answer: (B) Data Base Management Systems
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