Computer fundamental MCQ Questions and answers- Technical Aptitude

41

LISP was developed by

A) John Mc Carthy B) Blaise Pascal C) Dr. Hollerith D) John Napier E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

Lisp was invented by John McCarthy in 1958 while he was at the Massachusetts Institute of Technology (MIT).

42

The first mechanical calculating machine was made by

A) William Oughtred B) Gottfried Leibnitz C) Blaise Pascal D) Charles Babbage E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

Pascaline, also called Arithmetic Machine, the first calculator or adding machine to be produced in any quantity and actually used. The Pascaline was designed and built by the French mathematician-philosopher Blaise Pascal between 1642 and 1644.

43

Which programming language is much in vogue among users of microcomputers

A) ALGOL B) APL C) LOGO D) FORTH E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

Forth is an imperative stack-based computer programming language and environment originally designed by Charles "Chuck" Moore. Language features include structured programming, reflection, concatenative programming and extensibility.

44

Multiplication of 111₂ by 101₂ is

A) 110011₂ B) 100011₂ C) 111100₂ D) 000101₂ E) None of the above

Discuss

Answer & Solution

Answer: Option B

Solution:

Multiplication of 111₂ by 101₂ is 100011₂
7 = 111
5 = 101
So simple 5 × 7 = 35
Now it will be converting in binary
32 16 8 4 2 1
1 0 0 0 1 1
35 = 100011₂
The same technique will be used if large no occur.

45

Which of the following registers is used to keep track of address of the memory location where the next instruction is located?

A) Memory Address Register B) Memory Data Register C) Instruction Register D) Program Counter E) None of the above

Discuss

Answer & Solution

Answer: Option D

Solution:

A program counter is used to keep track of the execution of the program. It contains the memory address of the next instruction to be fetched.

46

Which is not a factor when categorizing a computer?

A) Speed of the output device B) Amount of main memory the CPU can use C) Cost of the system D) Capacity of the hard disk E) Where it was purchased

Discuss

Answer & Solution

Answer: Option E

Solution:

It was purchased is not a factor when categorized a computer. Computers can be classified, or typed, in many ways. Some common classifications of digital computers are summarized below. For others see Category: Classes of computers.

47

Conversion of an octal number 20₈ to its binary number is

A) 10000₂ B) 10111₂ C) 10110₂ D) 11110₂ E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

Conversion of an octal number 20₈ to its binary number is 10000₂.
20 to base 8 convert into decimals as 0 × 8⁰ + 2 × 8¹ = 0 + 16 = 16.
From decimal convert to binary,
i.e. $$\frac{{16}}{2}$$ = 8 remainder 0.
$$\frac{8}{2}$$ = 4 remainder 0.
$$\frac{4}{2}$$ = 2 remainder 0.
$$\frac{2}{2}$$ = 1 remainder 0.
So the answer is 10000₂

48

Which of the following is a system programming language for micro-computers in the Intel family.

A) LOGO B) SNOBOL C) PCM D) PL/1 E) None of the above

Discuss

Answer & Solution

Answer: Option E

Solution:

This question asks you to identify a programming language specifically designed for creating system software (like operating systems or drivers) on computers using Intel processors. Let's look at each option:

Option A: LOGO: LOGO is an educational programming language, not typically used for system programming.

Option B: SNOBOL: SNOBOL is a string processing language, not primarily used for system-level programming.

Option C: PCM: PCM (Pulse Code Modulation) is a method for digitally representing analog signals, not a programming language.

Option D: PL/1: PL/1 is a general-purpose programming language, but it's not commonly associated with microcomputer system programming in the Intel family.

Therefore, none of the given options are widely known system programming languages for Intel microcomputers. The correct answer is likely a language like Assembly language or C, which are commonly used for this purpose but not listed here.

The best answer is E: None of the above.

49

Which of the following can be output by a computer?

A) graphics B) voice C) text D) computer-usable data or information E) All of the above

Discuss

Answer & Solution

Answer: Option E

Solution:

An input device sends information to a computer system for processing, and an output device reproduces or displays the results of that processing. In the lower half of the image, the computer sends or outputs, data to a printer, which will print the data onto a piece of paper, also considered output.

50

Sequential file organization is most appropriate for which of the following applications?

A) grocery-store checkout B) bank checking accounts C) payroll D) airline reservations E) None of the above

Discuss

Answer & Solution

Answer: Option C

Solution:

Payroll is the compensation a business must pay to its employees for a set period or on a given date. It is usually managed by the accounting or human resources department of a company. Small-business payrolls may be handled directly by the owner or an associate.