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
21
Which type of computer is the fastest, most powerful, and most expensive?
Answer:
Supercomputer
** Supercomputers are at the pinnacle of computing power. They are designed for highly complex and computationally intensive tasks, such as weather forecasting, scientific research, and cryptography.
22
_________computer are of large size?
Answer:
Mainframe
Mainframe computers are very large and powerful computers, primarily used by large organizations for critical applications, bulk data processing such as censuses, industry and consumer statistics, enterprise resource planning, and transaction processing.
23
**What is the fundamental unit of information in computing?**
Answer:
Bit
** The bit (short for binary digit) is the most basic unit of information in computing and digital communications. A bit can have a value of either 0 or 1.
24
**What is a defining feature of an embedded computer?**
Answer:
It functions as part of a larger system and has a dedicated purpose
** Embedded computers are integrated into other devices (e.g., cars, microwaves, washing machines) to control specific functions of that device.
25
What is the maximum number of unique symbols that can be represented in an 8-bit ASCII code?
Answer:
256 characters
An 8-bit binary number can represent 2 to the power of 8 (2^8) different values. Calculating this gives 256 unique combinations. Therefore, an 8-bit ASCII code can represent 256 different characters or symbols.
26
**Which application is used to browse the World Wide Web?**
Answer:
Web Browser
** A web browser, such as Google Chrome, Mozilla Firefox, or Microsoft Edge, is a software application for accessing information on the World Wide Web.
27
A 'server' that provides services to multiple client computers over a network can be considered a modern form of a:
Answer:
Minicomputer
** The role of the minicomputer as a central computer for a department or small business has largely been taken over by powerful microcomputer-based servers. They are sometimes referred to as midrange systems, similar to minicomputers.
28
Which of the following characteristics of a computer refers to its ability to perform a variety of tasks?
Answer:
Versatility
** Versatility is the characteristic of a computer that allows it to perform a wide range of tasks, from simple calculations to complex simulations. This is possible because computers are programmable and can execute different sets of instructions.
29
Microsoft Word or Google Chrome are examples of:
Answer:
Application software
** Application software is designed to help the user perform specific tasks, such as writing a document, browsing the web, or playing a game.
30
A proctored online exam involves:
Answer:
An exam that is supervised, often using a webcam and microphone, to prevent cheating.
** Online proctoring is a method of ensuring the integrity of online exams by using technology to monitor the test-taker and their environment.