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
2371
In summary, the key trade-off between analog and digital computers is:
Answer:
Direct simulation vs. precision and flexibility
** Analog computers offer a direct and often faster way to simulate physical systems, but they lack the precision, reliability, and versatility of digital computers. Digital computers, through their programmable and precise nature, have become the dominant form of computing technology.
2372
Which of the following is a disadvantage of an analog computer?
Answer:
All of the above.
** Analog computers are typically designed for a specific purpose and are not easily reprogrammable (not versatile). They also have limitations in terms of data storage and are generally less accurate than their digital counterparts.
2373
The first general-purpose electronic computer, ENIAC, was a:
Answer:
Digital computer
** Although it used decimal arithmetic internally, ENIAC (Electronic Numerical Integrator and Computer) is considered the first general-purpose electronic digital computer because it operated on discrete numbers.
2374
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.
2375
_________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.
2376
**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.
2377
**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.
2378
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.
2379
**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.
2380
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.