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
2611
**What is 'telecommuting', an application of computers in the modern workplace?**
Answer:
Working from a location outside of the traditional office, often from home, by using computers and the internet
** Telecommuting, or remote work, is made possible by computer applications that allow for communication, collaboration, and access to work files from anywhere with an internet connection.
2612
**The speed of a computer's clock is measured in:**
Answer:
Gigahertz (GHz)
** The clock speed, measured in hertz (cycles per second), determines how many instructions the CPU can execute per second. Modern CPUs have clock speeds in the gigahertz range (billions of cycles per second).
2613
**A single binary digit (0 or 1) is referred to as a:**
Answer:
Bit
** The bit is the most basic unit of data in computing. All digital information is ultimately stored and processed as sequences of bits.
2614
The smallest unit of data in a computer is__________?
Answer:
Bit
A 'bit' (short for binary digit) is the most fundamental unit of data in computing. It can only have one of two values, either 0 or 1. All other data units, such as bytes, kilobytes, and terabytes, are composed of collections of bits.
2615
What is the full form of CAM in manufacturing?
Answer:
Computer Aided Manufacturing
CAM stands for Computer-Aided Manufacturing. It refers to the use of computer software to control machine tools and related machinery in the manufacturing process. CAM helps improve precision, efficiency, and automation in production.
2616
A desktop computer, a laptop, and a tablet are all types of:
Answer:
Microcomputers
** These are all examples of personal computers, which are the most common form of microcomputer. They are designed for use by a single individual at a time.
2617
**Which of the following is an example of an output device?**
Answer:
Printer
** An output device is any hardware device that receives data from a computer and translates it into another form. A printer takes digital data from the computer and produces a physical copy (hard copy).
2618
The category of 'minicomputer' is now largely considered obsolete because:
Answer:
The distinction between powerful microcomputers (servers) and smaller mainframes has blurred.
** The rapid increase in the power of microcomputers meant that they could take on the roles previously filled by minicomputers. The term is not commonly used today, as the landscape is now dominated by microcomputers and larger mainframe/supercomputer systems.
2619
**What technology is commonly used in retail stores to scan barcodes on products, which is an application of computers in daily life?**
Answer:
Barcode Reader
** A barcode reader is a handheld or stationary input device used to capture and read information contained in a barcode. This technology is widely used in retail stores for billing and inventory management, speeding up the checkout process.
2620
Which of the following is a limitation of a computer?
Answer:
It has no intelligence of its own.
** A significant limitation of computers is that they do not possess their own intelligence or common sense. They can only follow the instructions given to them by humans. The field of Artificial Intelligence aims to overcome this limitation.