Computer Fundamentals MCQs

Practice Computer Fundamentals MCQs with answers and detailed explanations covering computer basics, characteristics, types of computers, generations of computers and fundamental concepts frequently asked in SSC, Railway, Banking, UPSC, JKSSB and other competitive exams.

326 Total
Question #21 Report Error
What type of operating systems and user interfaces were primarily used during the third generation of computers?
A. Gesture-based Interface
B. Command Line Interface (CLI) with batch processing
C. Time-sharing and Remote-processing Operating Systems
D. Graphical User Interface (GUI)

Correct Answer: Option C


Explanation:
The third generation (IC era) saw the introduction of multi-programming, time-sharing, and early operating systems that allowed remote terminal access.

This question belongs to: Computer Computer Fundamentals
Question #22 Report Error
What is the primary technical limitation of first-generation computers that utilized vacuum tubes?
A. They relied entirely on integrated circuits.
B. They lacked any mathematical capability.
C. They were extremely slow compared to mechanical calculators.
D. They consumed immense power and generated excessive heat, requiring heavy cooling systems.

Correct Answer: Option D


Explanation:
Vacuum tubes were fragile glass components that consumed massive amounts of electricity, emitted extreme heat, and burned out frequently.

This question belongs to: Computer Computer Fundamentals
Question #23 Report Error
Which fundamental component of the Von Neumann CPU is responsible for temporarily storing the intermediate results of arithmetic and logical operations?
A. System Bus
B. Instruction Register
C. Program Counter
D. Accumulator

Correct Answer: Option D


Explanation:
The Accumulator is a special-purpose register within the ALU that stores intermediate calculation results during processing.

This question belongs to: Computer Computer Fundamentals
Question #24 Report Error
Desktop personal computers, laptops, tablets, and smartphones all fall under which structural category of computers?
A. Minicomputers
B. Mainframe Computers
C. Hybrid Computers
D. Microcomputers

Correct Answer: Option D


Explanation:
Microcomputers are systems whose central processing unit is contained on a single microchip (microprocessor), designed for individual consumer use.

This question belongs to: Computer Computer Fundamentals
Question #25 Report Error
Magnetic core memory was introduced as the primary internal storage mechanism during which computer generation?
A. Second Generation
B. First Generation
C. Third Generation
D. Fourth Generation

Correct Answer: Option A


Explanation:
Second-generation computers migrated from magnetic drums (used in the 1st generation) to much faster magnetic core memories for primary storage.

This question belongs to: Computer Computer Fundamentals
Question #26 Report Error
Which unit converts human-understandable data and instructions into a form that a digital electronic computer can interpret?
A. Input Unit
B. Memory Unit
C. Control Unit
D. Output Unit

Correct Answer: Option A


Explanation:
The Input Unit accepts external data and instructions from the user and translates them into binary form (0s and 1s) for processing.

This question belongs to: Computer Computer Fundamentals
Question #27 Report Error
The concept of 'Artificial Intelligence', natural language processing, and quantum computing research are the defining pillars of which generation?
A. Sixth Generation
B. Fourth Generation
C. Fifth Generation
D. Third Generation

Correct Answer: Option C


Explanation:
The Fifth Generation of computers is centered around Artificial Intelligence, advanced parallel processing, and knowledge-based processing systems.

This question belongs to: Computer Computer Fundamentals
Question #28 Report Error
Which component of the central processing unit performs logical operations such as comparing two numbers to see which one is greater?
A. Input Interface
B. Arithmetic Logic Unit
C. Memory Management Unit
D. Control Unit

Correct Answer: Option B


Explanation:
The Arithmetic Logic Unit (ALU) is split into two parts: the arithmetic section (addition, subtraction) and the logic section (comparisons like equal to, greater than).

This question belongs to: Computer Computer Fundamentals
Question #29 Report Error
What type of storage or memory media was predominantly used as the secondary backup storage mechanism in first-generation computers?
A. Optical Compact Discs
B. Magnetic Tapes and Magnetic Drums
C. Floppy Disks
D. Solid State Drives

Correct Answer: Option B


Explanation:
First-generation computers relied on punched cards, paper tapes, and magnetic drums/tapes for external data retention.

This question belongs to: Computer Computer Fundamentals
Question #30 Report Error
Which early mechanical computing device was invented by Blaise Pascal in 1642 and used a system of interlocking gears and wheels to perform addition and subtraction?
A. Difference Engine
B. Step Reckoner
C. Analytical Engine
D. Pascaline

Correct Answer: Option D


Explanation:
The Pascaline, or Arithmetic Machine, was the first mechanical calculator capable of performing addition and subtraction directly via rotating wheels.

This question belongs to: Computer Computer Fundamentals