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
121
**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.
122
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).
123
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.
124
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.
125
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.
126
**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.
127
**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.
128
**How do computers assist in medical diagnostics?**
Answer:
Through technologies like MRI, CT scans, and processing of medical images
** Computers are crucial in modern medicine for operating advanced diagnostic equipment and for analyzing the complex images and data they produce, leading to more accurate diagnoses.
129
What is the primary difference between a supercomputer and a mainframe?
Answer:
Supercomputers focus on processing a few complex tasks as fast as possible, while mainframes excel at processing a high volume of simple transactions.
** This is the key distinction in their design philosophy. Supercomputers are optimized for computational speed (FLOPS), while mainframes are optimized for input/output (I/O) throughput and reliability to handle many concurrent transactions.
130
**How have computers in banking improved customer service?**
Answer:
By providing 24/7 access to banking services through ATMs and online platforms
** Computers have revolutionized banking by enabling round-the-clock services, allowing customers to perform transactions, check balances, and apply for services anytime, anywhere, significantly improving convenience and accessibility.