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
61
The results from a digital computer are repeatable, while the results from an analog computer may have slight variations due to:
Answer:
Component imperfections and environmental factors
** The physical components of an analog computer are subject to wear, temperature changes, and other environmental factors, which can introduce small variations in the results. Digital computations, being based on abstract logic, are perfectly repeatable.
62
**The term 'URL' is an abbreviation for:**
Answer:
Uniform Resource Locator
** A URL is the address of a resource on the World Wide Web. It specifies the location of a resource on the internet and the protocol used to access it.
63
What is the equivalent of 1 Killobyte in digital memory?
Answer:
1024 bytes
In digital memory measurement, units are based on powers of 2 because computers operate on a binary system. A Kilobyte (KB) is defined as 2^10 bytes, which equals 1024 bytes.
64
Which of the following is an example of an input device?
Answer:
Keyboard
** An input device is any piece of hardware that is used to send data to a computer. A keyboard is used to input text and commands.
65
**What is 'cache memory' in a computer?**
Answer:
A very fast, small amount of memory used to speed up access to frequently used data
** Cache memory is a smaller, faster memory which stores copies of the data from frequently used main memory locations. This allows the CPU to access data more quickly, improving overall system performance.
66
A computer that serves a group of connected users over a network is a:
Answer:
Server
** A server is a computer that is dedicated to providing services to other computers, known as clients, on a network. Servers can be physically based on microcomputer, minicomputer, or even mainframe hardware.
67
The ability of a computer to continue operating over a long period without failure is a measure of its:
Answer:
Reliability
** Reliability encompasses not just the consistency of results but also the dependability of the hardware and software to function correctly over time. This is a critical factor for systems that need to be available 24/7.
68
When a computer is used to control a manufacturing process, which characteristic is most prominently displayed?
Answer:
Automation
** In manufacturing, computers are used to automate repetitive and complex tasks, ensuring precision and efficiency. This automation is a key application of computer technology in industrial settings.
69
Supercomputers are typically used for:
Answer:
Complex scientific and engineering problems
** Supercomputers are employed for tasks that require immense processing power, such as climate modeling, molecular modeling, and nuclear simulations.
70
**What is ROM (Read-Only Memory)?**
Answer:
A type of non-volatile memory from which data can only be read, not written to, by the user
** ROM contains the firmware and bootstrapping instructions (like the BIOS) that the computer needs to start up. Its contents are permanent and are not lost when the power is turned off.