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
231
The computer that process both analog and digital is called____________?
Answer:
Hybrid computer
A hybrid computer combines the features of both analog and digital computers. It can process continuous data (like measurements) from analog sources and discrete data (like numbers) from digital sources, making it useful in specialized scientific and industrial applications, such as in hospitals to measure a patient's heartbeat.
232
**What is 'e-commerce', a major application of computers in daily life?**
Answer:
The buying and selling of goods or services using the internet
** E-commerce encompasses online retail, electronic payments, and online auctions, allowing consumers and businesses to conduct transactions electronically.
233
**In banking, what is the role of a Core Banking System (CBS)?**
Answer:
A centralized system that enables bank branches to access customer accounts and perform transactions from any branch
** A CBS is a backend system that processes banking transactions and posts updates to accounts and other financial records. It is the heart of a modern bank's IT infrastructure.
234
What is the equivalent size of 1 Gigabyte?
Answer:
1024 megabytes
In computer memory and storage, units are based on powers of 2. A kilobyte is 1024 bytes, a megabyte is 1024 kilobytes, and a gigabyte (GB) is 1024 megabytes (MB). This binary-based system is standard for measuring digital information capacity.
235
A car's speedometer is an example of a(n):
Answer:
Digital device
** A traditional speedometer with a needle that moves along a dial is an analog device. It represents the car's speed as a continuous physical quantity (the angle of the needle). Modern digital speedometers, which display the speed as a number, are digital devices.
236
The first commercially successful minicomputer was the:
Answer:
PDP-8
** The PDP-8, introduced by Digital Equipment Corporation (DEC) in 1965, is widely considered the first successful minicomputer. Its low cost and small size made computing accessible to many smaller organizations.
237
**Which type of computer is characterized by its large size, high processing power, and use in large organizations for critical applications?**
Answer:
Mainframe computer
** Mainframe computers are powerful computers used primarily by large organizations for critical applications, bulk data processing, such as census, industry and consumer statistics, enterprise resource planning, and transaction processing.
238
The main advantage of a computer's lack of emotion is:
Answer:
It provides objective and unbiased results.
** The absence of emotions ensures that a computer's processing is purely logical and not influenced by feelings, which is essential for fair and consistent decision-making in many applications.
239
In which of the following applications would a hybrid computer be most useful?
Answer:
Scientific calculations that require real-time processing of continuous data.
** Hybrid computers excel in situations where both analog and digital processing are needed. For example, in a patient monitoring system in a hospital, the analog part can measure the patient's vitals (continuous data), and the digital part can process and display this information.
240
**Supercomputers are primarily used for:**
Answer:
Intensive computational tasks like scientific research and complex simulations
** The architecture of a supercomputer is designed for speed and processing power to handle extremely complex calculations that are beyond the capabilities of other computer types.