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
2531
The characteristic of a computer that allows it to perform millions of calculations in a fraction of a second is:
Answer:
Speed
** Computers are incredibly fast devices. Their speed is a result of their electronic components and the ability of the CPU to execute instructions at an extremely high rate.
2532
**The term 'hertz' (Hz) is used to measure what in a computer?**
Answer:
Processing speed of the CPU
** The clock speed of a processor is measured in hertz (Hz), typically in gigahertz (GHz) for modern CPUs. It indicates how many processing cycles the CPU can execute per second.
2533
The use of computers in education to provide learning materials and courses online is known as:
Answer:
E-learning
** E-learning, or electronic learning, encompasses all forms of education and training that are delivered electronically, often over the internet.
2534
**In education, what is a Learning Management System (LMS)?**
Answer:
A software application for the administration, documentation, tracking, reporting, and delivery of educational courses or training programs
** An LMS is a comprehensive platform used by educational institutions to manage all aspects of the learning process, from course content and assignments to communication and grading.
2535
The technology that allows you to make payments by simply tapping your credit card or smartphone on a terminal is called:
Answer:
Near Field Communication (NFC)
** NFC is a short-range wireless communication technology that enables secure, contactless transactions and is a common feature in modern smartphones and payment cards.
2536
A hybrid computer is a combination of the features of:
Answer:
Analog and digital computers
** Hybrid computers combine the best features of both analog and digital computers. They use the analog component for fast computation and the digital component for logic, control, and precision.
2537
**Which of the following represents one billion bytes?**
Answer:
Gigabyte (GB)
** A Gigabyte (GB) is a unit of digital information storage which is roughly equivalent to one billion bytes. It is a common unit for modern hardware such as hard drives and RAM.
2538
What is the binary equivalent of a single unit of digital information?
Answer:
8 bits
The fundamental unit of digital information is the byte. A single byte is universally defined as consisting of 8 binary digits, or bits. This allows for 256 different combinations (2^8), which can represent characters, numbers, and other data.
2539
**In the context of banking, what does ATM stand for?**
Answer:
Automated Teller Machine
** ATMs are electronic telecommunications devices that enable customers of financial institutions to perform financial transactions, such as cash withdrawals, deposits, transfer funds, or obtaining account information, at any time and without the need for direct interaction with bank staff.
2540
**Which of the following is a single-board computer?**
Answer:
A Raspberry Pi
** A single-board computer is a complete computer built on a single circuit board, with a microprocessor, memory, input/output, and other features. The Raspberry Pi is a very popular example used by hobbyists and educators.