DSSSB Librarian Exam (Post Code 10/17) held on 01 September 2019 Solved Questions with Explanations (21-30)

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?

(A) Information - Knowledge - Data
(B) Data - Information - Knowledge
(C) Information - Data - Knowledge
(D) Data - Knowledge - Information

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Answer: (B) Data - Information - Knowledge

22. Which one is the first generation computer?

(A) Micro Computer
(B) UNIVAC-I
(C) Super computer
(D) ENIAC

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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?

(A) ALU
(B) CPU
(C) CU
(D) Output

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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 __.

(A) Input devices
(B) Memory devices
(C) Output devices
(D) Storage devices

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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

(A) (a), (b), (c), (d), (e) and (f)
(B) (a), (b), (d), (e), (c) and (f)
(C) (b), (a), (c), (d), (e) and (f)
(D) (a), (c), (b), (e), (d) and (f)

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Answer: (B)

26. Binary system of computers consists __.

(A) Two digits
(B) Four digits
(C) Six digits
(D) Eight digits

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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?

(A) 1957
(B) 1958
(C) 1955
(D) 1960

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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 __.

(A) ROM and RUM
(B) RAM and ROM
(C) RAM and WROM
(D) None of the above

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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 __.

(A) System softwares
(B) Application softwares
(C) Softwares
(D) Operating systems

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Answer: (D) Operating systems

30. What is full form of DBMS?

(A) Data Base Management Services
(B) Data Base Management Systems
(C) Data Base Manager Services
(D) Data Base Managing Systems

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Answer: (B) Data Base Management Systems