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
2591
The main advantage of a computer's lack of emotion is:
Answer:
It provides objective and unbiased results.
** The absence of emotions ensures that a computer's processing is purely logical and not influenced by feelings, which is essential for fair and consistent decision-making in many applications.
2592
In which of the following applications would a hybrid computer be most useful?
Answer:
Scientific calculations that require real-time processing of continuous data.
** Hybrid computers excel in situations where both analog and digital processing are needed. For example, in a patient monitoring system in a hospital, the analog part can measure the patient's vitals (continuous data), and the digital part can process and display this information.
2593
**Supercomputers are primarily used for:**
Answer:
Intensive computational tasks like scientific research and complex simulations
** The architecture of a supercomputer is designed for speed and processing power to handle extremely complex calculations that are beyond the capabilities of other computer types.
2594
In the context of exams, computer-aided evaluation helps in:
Answer:
All of the above.
** Using computers to evaluate exams offers multiple benefits, including speed, objectivity in scoring, and the ability to perform detailed statistical analysis of the results.
2595
The speed of the CPU is measured in:
Answer:
Hertz (Hz)
** The CPU's clock speed, which indicates how many instructions it can process per second, is measured in Hertz. Modern CPUs have clock speeds in the gigahertz (GHz) range, meaning billions of cycles per second.
2596
**What does 'megabyte' (MB) typically represent in terms of bytes?**
Answer:
1,024 kilobytes
** A megabyte is a unit of digital information storage. One megabyte is equal to 1,024 kilobytes (KB), or 1,048,576 bytes.
2597
**A personal computer (PC) is a type of:**
Answer:
Microcomputer
** A personal computer is a microcomputer designed for use by one person at a time. The term PC is most commonly associated with computers that run the Windows operating system.
2598
What is a defining feature of analogue computer inputs?
Answer:
They remain in analogue form throughout the process.
Analogue computers are designed to process data that varies continuously, such as voltage, pressure, or temperature. A key feature is that the input data is never converted to a digital format; it is processed and outputted in its original continuous, analogue form.
2599
In a hybrid computer, the digital part is typically responsible for:
Answer:
Providing logic, control, and user interface
** The digital component of a hybrid computer acts as the controller, setting up the analog part to solve a problem and managing the overall operation of the system. It also handles the user interface and the storage of results.
2600
**The term for a set of instructions that tells a computer what to do is:**
Answer:
Hardware
** Software, also known as a computer program, is a collection of instructions or data that tells the computer how to work. This is in contrast to hardware, from which the system is built and which actually performs the work.