Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
2501
**The most powerful computers, used for complex scientific and engineering calculations, are called:**
Answer:
Supercomputers
** Supercomputers are the fastest and most powerful type of computer. They are used for tasks that require massive numerical calculations, such as weather forecasting, scientific simulations, and nuclear energy research.
2502
**Which of the following is a primary use of computers in the examination process?**
Answer:
To conduct online examinations and automate result processing
** Computers are extensively used to conduct large-scale online examinations, which allows for immediate evaluation, automated grading of multiple-choice questions, and faster declaration of results, thereby making the process more efficient and transparent.
2503
Which of the following is NOT a characteristic of a computer?
Answer:
IQ
** Computers do not have an Intelligence Quotient (IQ) in the human sense. They operate based on programmed logic and do not possess creativity, intuition, or the ability to learn in the same way humans do (though machine learning is a step in that direction).
2504
**What is the role of computers in modern communication, a key aspect of daily life?**
Answer:
They enable instant communication through email, instant messaging, and video calls
** Computers and the internet have transformed communication by providing numerous platforms for instant and real-time interaction, connecting people across the globe easily and affordably.
2505
The development of the microprocessor led to the creation of:
Answer:
Microcomputers
** The microprocessor, a single integrated circuit that contains all the functions of a central processing unit, was the key technological innovation that made it possible to build small, low-cost computers for personal use.
2506
**A 'word' in computer architecture refers to:**
Answer:
A fixed-size group of bits handled as a unit by the instruction set or hardware of the processor
** The word size of a computer (e.g., 32-bit or 64-bit) determines how much data the CPU can process at one time and is a fundamental aspect of its architecture.
2507
The fundamental difference between analog and digital computers lies in:
Answer:
The way they represent data
** The core distinction is how information is represented. Analog computers use a continuous range of values, while digital computers use a discrete set of values (binary). This fundamental difference leads to all the other variations in their characteristics and applications.
2508
Which of the following is a type of non-volatile memory?
Answer:
Flash drive
** Non-volatile memory is a type of memory that can retain stored information even when not powered. Flash drives, SSDs, and ROM are all examples of non-volatile memory. RAM is volatile.
2509
Analog computers are primarily used for:
Answer:
Specific scientific and engineering problems
** Due to their nature, analog computers are best suited for solving systems of differential equations and simulating physical systems, which are common tasks in science and engineering.
2510
Which of the following terms does not belong to a classification of computers based on size?
Answer:
Digital computer
Computers can be classified by their size and processing power into categories like microcomputer (e.g., PC), minicomputer, and mainframe computer. "Digital computer" describes how a computer processes information (using discrete digits), not its size. An analog computer would be the counterpart to a digital one.