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
161
**What does the acronym 'CPU' stand for?**
Answer:
Central Processing Unit
** The CPU is the electronic circuitry within a computer that executes instructions that make up a computer program. It is often referred to as the "brain" of the computer.
162
**How is data organized in a spreadsheet application, a common tool in business and daily life?**
Answer:
In rows and columns
** Spreadsheet applications like Microsoft Excel or Google Sheets organize data in a grid of cells, which are the intersections of rows and columns. This structure is ideal for calculations, data analysis, and creating charts.
163
**The process of starting or restarting a computer is called:**
Answer:
Booting
** Booting is the process that starts the operating system when the computer is turned on. It loads the operating system from the hard drive into the computer's RAM.
164
Which of the following is an example of an analog computer?
Answer:
A slide rule
** A slide rule is a classic example of an analog computing device. It uses physical lengths on a set of scales to perform multiplication and division. Thermometers and speedometers are also examples of analog devices.
165
**Wearable computers, such as smartwatches, are a category of:**
Answer:
Microcomputers
** Wearable devices contain small, specialized microprocessors and are a form of microcomputer designed to be worn on the body.
166
**Which technology, an application of computers in banking, is used to read the special characters on the bottom of a check?**
Answer:
MICR (Magnetic Ink Character Recognition)
** MICR is a character-recognition technology used mainly by the banking industry to ease the processing and clearance of checks and other documents. The MICR encoding, called the MICR line, is at the bottom of checks.
167
A major concern with online banking and e-commerce is:
Answer:
Security and privacy of data
** While online services are convenient, they also create risks of fraud, hacking, and data breaches. Therefore, ensuring robust security and protecting user privacy is a top priority for these applications.
168
A smartphone is a type of:
Answer:
Microcomputer
** A smartphone contains a microprocessor and fits the definition of a microcomputer, albeit in a very small and portable form factor.
169
The system that allows for the electronic transfer of funds from one bank account to another is known as:
Answer:
Electronic Funds Transfer (EFT)
** EFT is a broad term that includes various systems for transferring money electronically, such as wire transfers, direct deposits, and online bill payments.
170
In the context of examinations, what does OMR stand for?
Answer:
Optical Mark Recognition
** OMR is a technology used to capture human-marked data from document forms such as surveys and tests. It is widely used for grading multiple-choice question papers quickly and accurately.