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
2491
Approximately how many bytes are in a kilobyte (KB)?
Answer:
1,000
** In the decimal system (used for storage capacity), a kilobyte is 1,000 bytes. In the binary system (used for memory), a kilobyte (or more accurately, a kibibyte) is 1,024 (2^10) bytes. For general purposes, 1,000 is the common approximation.
2492
**Minicomputers are also known as:**
Answer:
Mid-range computers
** Minicomputers, or mid-range computers, are multi-user computers which are more powerful than microcomputers but less powerful than mainframe computers. They were commonly used in the 1960s and 70s before high-end microcomputers became prevalent.
2493
**A quantum computer, a new and emerging type of computer, is based on the principles of:**
Answer:
Quantum mechanics
** Quantum computers leverage quantum-mechanical phenomena, such as superposition and entanglement, to perform calculations. They have the potential to solve certain problems much faster than classical computers.
2494
**Which type of computer is often used as a single-user system for tasks that require more power than a standard PC, such as graphic design or engineering?**
Answer:
Workstation
** A workstation is a high-performance computer designed for a single user and has advanced graphics capabilities, large storage capacity, and a powerful microprocessor. It is more capable than a personal computer but less powerful than a mainframe.
2495
The use of hybrid computers has declined because:
Answer:
The power and speed of digital computers have increased dramatically.
** With the exponential growth in the performance of digital computers, it has become possible to simulate analog processes on digital machines with sufficient accuracy and speed. This has reduced the need for specialized hybrid hardware in many applications.
2496
The physical size of the computer is a primary factor in which classification?
Answer:
Super, Mainframe, Mini, Micro
** This classification is based on a combination of factors, including processing power, cost, and physical size. Historically, supercomputers and mainframes were very large, while mini and microcomputers were progressively smaller.
2497
**What type of computer is a smartphone considered to be?**
Answer:
A type of handheld microcomputer
** Smartphones are powerful, portable devices that fit in the palm of your hand and contain a microprocessor, memory, and a display screen, classifying them as microcomputers.
2498
**In education, what is a Massive Open Online Course (MOOC)?**
Answer:
An online course aimed at unlimited participation and open access via the web
** MOOCs are a modern form of distance education, providing large numbers of students with access to university-level courses through the internet.
2499
What does ATM stand for in the banking sector?
Answer:
Automatic Teller Machine
** An ATM is an electronic telecommunications device that enables customers of financial institutions to perform financial transactions, such as cash withdrawals, deposits, and account inquiries, at any time without the need for a human teller.
2500
Which of the following is the most powerful computers?
Answer:
Super Computers
Supercomputers are the most powerful and fastest type of computer. They are designed for performing complex and computationally intensive tasks, such as scientific simulations, weather forecasting, and cryptographic analysis, by utilizing massive parallel processing capabilities.