Computer fundamental MCQ Questions and answers- Technical Aptitude

71

The IC was invented at Texas instruments in year 1958 by

A) Jack Kilby B) Clive Sinclair C) John Napier D) Steve Wozniak E) Herman Hollerith

Discuss

Answer & Solution

Answer: Option A

Solution:

Jack Kilby was an American electrical engineer who took part (along with Robert Noyce) in the realization of the first integrated circuit while working at Texas Instruments (TI) in 1958.

72

The personnel which deal with the computer and its management put together is known as

A) Firm ware B) Human ware C) Software D) Hardware E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

The personnel which deal with the computer and its management put together is known as Human ware. The personnel which are related to installation, maintenance, operation and testing of a computer are called human ware or livewire. E.g. Programmers, Hardware or Network Engineers, System Analysts etc. Firmware is software embedded in hardware.

73

A path linking 2 hardware or telecommunication units down which data and control signals can be transmitted is

A) Modulation B) Demodulation C) Channel D) Signalling E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

A path linking 2 hardware or telecommunication units down which data and control signals can be transmitted is Channel .A channel is a passageway, a means of access for a thing, a communication, or an idea. Think of a channel as sort of a tunnel or a funnel that moves something directly through.

74

The unit of hardware an operator uses to monitor computer processing is the:

A) Card reader B) CPU C) Line printer D) Console E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

The unit of hardware an operator uses to monitor computer processing is the Console. Central processing Unit (CPU) is the main component or 'brain' of the computer which performs all the processing of input data.

75

A framework in which circuit boards can he mounted is

A) Switch circuit B) Chip C) Card cage D) Bar code E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

A framework in which circuit boards can he mounted is Card cage. An enclosure into which printed circuit boards (cards) are inserted. The cage may be exposed to the outside for quick insertion and removal of cards, or it may reside behind a door or inside a larger cabinet.

76

What is the minimum number of operations required, for a microprocessor with 8 data pins, to read a 32-bit word?

A) 1 B) 2 C) 4 D) 8 E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

Consider the situation where a microprocessor gives an output of an 8-bit word. This is fed through an 8-bit digital-to-analog converter to a control valve. The control valve requires 6.0 V to be fully open.

77

The main purpose of the off line device is

A) To reduce the no.of operator errors in recording data B) To save computer time C) To save floor space in the computer centre D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

In computer technology and telecommunications, online indicates a state of connectivity, and offline indicates a disconnected state. The main purpose of the off line device is to save computer time.

78

The accuracy of the floating point numbers representable in two 16 bit words of a computer is approximately

A) 16 digits B) 6 digits C) 4 digits D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

This means that floating point numbers have between 6 and 7 digits of precision, regardless of exponent. That means that from 0 to 1, you have quite a few decimal places to work with. If you go into the hundreds or thousands, you've lost a few.

79

Which of the following is a special purpose language used to describe to a computer's operating system.

A) LOGO B) APL C) ICL D) CORAL E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

A special purpose language used to describe to a computer's operating system ICL. International Computers Limited (ICL) was British computer hardware, computer software and computer Services Company that operated from 1968 until 2002.

80

Which of the following languages is the most widely used?

A) PL/1 B) BASIC C) FORTRAN D) PASCAL E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

1) A FORTRAN language is the most widely used.
2) Formula Translation.
3) FORTRAN was the world's first high-level programming language.
4) FORTRAN was designed for scientists and engineers and has dominated this field.