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
31
What is the largest scale of computer system?
Answer:
Enterprise-level computer
Mainframe computers, often referred to as enterprise-level computers, are the largest in scale, designed for massive data processing and supporting thousands of users simultaneously in large organizations like banks and corporations. High-performance computers (supercomputers) are the fastest, but mainframes are the largest in terms of transaction throughput and user support.
32
Processed, organized, and structured data is called:
Answer:
Information
** The output of a computer's processing is information, which is data that has been given context and meaning.
33
In healthcare, computers are used for:
Answer:
All of the above
** Computers have a wide range of applications in healthcare, from administrative tasks like record-keeping to highly sophisticated diagnostic and surgical procedures.
34
The process of converting an analog signal to a digital signal is called:
Answer:
Sampling or digitization
** An Analog-to-Digital Converter (ADC) is a device that converts a continuous analog signal into a discrete digital signal. This process involves taking samples of the analog signal at regular intervals and representing them as binary numbers.
35
**In daily life, what is the purpose of using a word processor application?**
Answer:
To create, edit, and format text documents
** Word processors such as Microsoft Word or Google Docs are essential tools for creating a variety of documents, including letters, resumes, reports, and flyers, making them a staple computer application for personal and professional use.
36
The memory that stores the computer's startup instructions and is non-volatile (retains its contents when the power is off) is:
Answer:
ROM
** Read-Only Memory (ROM) contains the firmware that is needed to boot up the computer. Its contents are permanent and cannot be easily changed.
37
The output of an analog computer is typically in the form of:
Answer:
A graph or a reading on a dial
** Since analog computers deal with continuous physical quantities, their output is often a visual representation of that quantity, such as the position of a needle on a gauge or a line on a graph.
38
_____________computers operates essentially by counting?
Answer:
Digital computer
Digital computers operate by processing data represented in a discrete, numerical form. At the most fundamental level, all their operations, from arithmetic to text processing, are based on manipulating binary digits (0s and 1s), which is a form of counting.
39
One megabyte (MB) is approximately equal to:
Answer:
1,000 kilobytes
** In the decimal system, a megabyte is 1,000 kilobytes or 1,000,000 bytes.
40
A computer's ability to perform calculations without making mistakes is a testament to its:
Answer:
Accuracy
** Computers are designed to be extremely accurate. They can perform complex mathematical calculations with a very high degree of precision, far exceeding human capabilities for such tasks.