Computer fundamental MCQ Questions and answers- Technical Aptitude

41

Character readers are those devices which read the characters printed on the source documents and then convert them directly into computer-usable input. Which of the following is not a character reader?

A) OCR B) MICR C) OMR D) LCD E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

LCD (Liquid Crystal Display) is a type of flat panel display which uses liquid crystals in its primary form of operation. LEDs have a large and varying set of use cases for consumers and businesses, as they can be commonly found in Smartphone, televisions, computer monitors and instrument panels.

42

SPSS stands for

A) Statistical Package for Systems Science B) Systems Package for Social Science C) Statistical Package for Sociai Science D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

SPSS Statistics is a statistical software suite developed by IBM for data management, advanced analytics, multivariate analysis, business intelligence, criminal investigation. Long produced by SPSS Inc. It was acquired by IBM in 2009. Current versions (post 2015) have the brand name: IBM SPSS Statistics.
The software name originally stood for Statistical Package for the Social Sciences (SPSS), reflecting the original market, then later changed to Statistical Product and Service Solutions.
SPSS is a widely used program for statistical analysis in social science. It is also used by market researchers, health researchers, survey companies, government, education researchers, marketing organizations, data miners and others.

43

An Integrated Circuit (IC) is

A) Fabricated on a tiny silicon chip B) A complicated circuit C) Much costlier than a single transistor D) An integrating device E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, usually silicon.

44

The 2's complement number of 110010 is

A) 1101 B) 110011 C) 10011 D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option E

Solution:

For example, 1's complement of binary number 110010 is 001101. To get 2's complement of binary number is 1's complement of given number plus 1 to the least significant bit (LSB). For example 2's complement of binary number 10010 is (01101) + 1 = 01110. The 2's complement number of 110010 is none of the above.

45

The purpose of an application program is to

A) Convert program written in high level language to machine language B) Meet specific user needs C) Allow the operating system to control resources better D) Make off-line equpment run better E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

An application program (application or app for short) is a computer program designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end-users. Word processors, media players, and accounting software are examples.

46

Which of the following translate back from machine code something resembling the source language

A) Interpreter B) Compiler C) Assembler D) Decompiler E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

A decompiler is a computer program that takes an executable file as input, and attempts to create a high level source file which can be recompiled successfully.

47

Who developed a mechanical device in the 17^th century that could add, subtract, multiply, divide and find square roots?

A) Napier B) Babbage C) Pascal D) Leibnitz E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

Gottfried Wilhelm Leibniz (b. 1646, d. 1716) was a German philosopher, mathematician, and logician who are probably most well known for having invented the differential and integral calculus (independently of Sir Isaac Newton).

48

Serial access memories are useful in applications where

A) data consists of numbers B) short access time is required C) each stored word is processed differently D) data naturally needs to flow in and out in serial form E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

1) Serial access memories are useful in applications where data naturally needs to flow in and out in serial form.
2) Serial access is where data records are stored one after the other with no regard to the order.

49

A six - digit card field used for postal ZIP codes is defined as

A) A letter field B) An alphabetic field C) A numeric field D) An alphanumeric field E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

A six - digit card field used for postal ZIP codes is defined as a numeric field. The two codes are essentially the same in their purpose, but the term Zip code is mainly used in the USA; Postal Code is commonly used in other countries.

50

The octal equivalent of the number 11010.1011 is

A) 32.54 B) 63.51 C) 32.27 D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

The octal equivalent of the number 11010.1011 is 32.54 Octal.
Because,
11010 ⇒ 011 010 = 32 (in octal)
1011 ⇒ 101 100 = 54 (in Octal)
So, 11010.1011 = 32.54 (in Octal)