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
241
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.
242
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.
243
**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.
244
**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.
245
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.
246
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.
247
**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.
248
**In the context of online exams, what is 'remote proctoring'?**
Answer:
A method of invigilation that uses technology to monitor students during an online exam
** Remote proctoring involves using webcams, microphones, and screen sharing to monitor a candidate's activity during an online exam to ensure academic integrity and prevent cheating.
249
What does RAM stand for?
Answer:
Random Access Memory
** RAM is a type of computer memory that can be read from and written to in any order (randomly). It is used to store the data and programs that the computer is currently using.
250
The concept of "programmability" is most closely related to which characteristic of a computer?
Answer:
Versatility
** It is the ability to be programmed that gives a computer its versatility. By changing the program (software), the same hardware can be made to perform a completely different task.