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
211
A digital computer works on the principle of:
Answer:
Binary arithmetic
** The foundation of all digital computing is the binary number system and the rules of binary arithmetic. All operations, from simple addition to complex data processing, are ultimately performed using binary logic.
212
The computer you are most likely to find in your home or office is a:
Answer:
Microcomputer
** Microcomputers, also known as personal computers (PCs), are the most common type of computer. This category includes desktops, laptops, tablets, and smartphones.
213
The evolution from mainframe to microcomputer represents a shift towards:
Answer:
Centralized computing
** The mainframe era was characterized by centralized computing, where a single large computer served many users with "dumb" terminals. The rise of the microcomputer led to a decentralized model, with processing power distributed among individual PCs and servers.
214
The ability to connect computers together to share information and resources is an extension of which characteristic?
Answer:
Versatility
** While not always listed as a primary characteristic, connectivity is a crucial aspect of modern computing. It is an extension of versatility, as it allows computers to perform a wider range of tasks by interacting with other systems.
215
**What technology allows for contactless payments, a common computer application in modern banking and retail?**
Answer:
Near Field Communication (NFC)
** NFC is a set of communication protocols that enables two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm of each other.
216
What does a sequence of 8 binary digits (bits) form?
Answer:
Byte
A byte is a standard unit of digital information in computing and telecommunications. It consists of a sequence of 8 bits (binary digits). This grouping is the basic addressable element in many computer architectures.
217
A GUI stands for:
Answer:
Graphical User Interface
** A GUI is a type of user interface that allows users to interact with electronic devices through graphical icons and visual indicators, as opposed to text-based interfaces. It makes computers much easier to use.
218
**One terabyte (TB) is equal to:**
Answer:
1,024 gigabytes
** Following the binary measurement system for data storage, a terabyte represents 1,024 gigabytes, which is a common size for modern hard drives.
219
**What is the purpose of an operating system (OS)?**
Answer:
All of the above
** The operating system acts as an intermediary between the computer hardware and the user, managing both hardware and software resources and providing the interface for user interaction.
220
**A server farm or server cluster is a collection of:**
Answer:
Computer servers
** Large organizations and internet companies use server farms—large groups of networked server computers—to provide the computational power and storage needed for their services.