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
2471
What term describes computers that combine both measuring and counting?
Answer:
Hybrid
Hybrid computers are specialized machines that integrate the features of both analog and digital computers. Analog computers are excellent at measuring continuous data (like temperature or pressure), while digital computers excel at counting and logical operations. A hybrid system leverages both strengths, making it suitable for complex simulations and industrial control processes.
2472
**A computer that is portable and suitable for use while traveling is known as a:**
Answer:
Laptop
** Laptops, also known as notebooks, are portable computers that are small and light enough to be used on one's lap, making them ideal for people who need computing power on the go.
2473
**What is the brain of the computer called?**
Answer:
CPU (Central Processing Unit)
** The CPU is the primary component of a computer that performs most of the processing inside the computer. It is responsible for executing instructions and performing calculations.
2474
**A computer designed to be used by one person at a time is known as a:**
Answer:
Personal Computer (PC)
** The term 'personal computer' itself signifies that it is intended for individual use, as opposed to mainframes or servers which are designed to be used by many people simultaneously.
2475
When a computer performs the same task repeatedly without any errors, it is demonstrating:
Answer:
Diligence
** Performing a repetitive task without errors showcases both diligence (no fatigue or loss of concentration) and accuracy (performing the task correctly each time).
2476
Which type of computer is often referred to as a "midrange" computer, filling the space between mainframes and microcomputers?
Answer:
Minicomputer
** Minicomputers were developed in the 1960s and were smaller, cheaper, and less powerful than mainframes, but more powerful than the microcomputers that would come later. They were often used by small and medium-sized businesses.
2477
A set of instructions that tells the computer hardware what to do is called:
Answer:
Hardware
** Software is the collection of programs, procedures, and documentation that performs tasks on a computer system. It is the intangible part that controls the hardware.
2478
The term 'Computer' originates from which language?
Answer:
Latin
The word 'Computer' is derived from the Latin word 'computare,' which means 'to calculate,' 'to reckon,' or 'to sum up.' This highlights the original purpose of early computing devices, which was primarily for performing mathematical calculations.
2479
**The hexadecimal number system, often used in computer science, has a base of:**
Answer:
16
** The hexadecimal system uses 16 distinct symbols, 0–9 and A–F, to represent numbers. It is commonly used to represent binary data in a more human-readable format.
2480
**What is the common term for the use of computers to create, store, and manage budgets and track expenses in daily life?**
Answer:
Personal Finance Management
** Personal finance management software and applications are widely used computer tools that help individuals and families manage their income, expenses, and investments, contributing to better financial health.