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
51
When a computer system is used to control traffic lights in a city, it is an application in:
Answer:
Public administration and daily life
** Computers are widely used in public infrastructure and services, such as traffic management, to improve efficiency and safety for citizens.
52
Which type of computer generally has a faster processing speed, a minicomputer or a microcomputer?
Answer:
Minicomputer
Minicomputers are designed to be more powerful than microcomputers (personal computers). They were developed to handle more complex tasks and support multiple users, which necessitated faster processors and more memory compared to the single-user microcomputers of their time.
53
What is the largest SI unit of memory and is equal to___________?
Answer:
Yottabyte= 1000 Zettabyte
The standard SI prefixes for data storage units increase by a factor of 1000. The order is Kilo, Mega, Giga, Tera, Peta, Exa, Zetta, and Yottabyte. Therefore, a Yottabyte is the largest named unit in this list and is equal to 1000 Zettabytes.
54
**What does the acronym ASCII stand for in computer terminology?**
Answer:
American Standard Code for Information Interchange
** ASCII is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices.
55
Which of the following is an example of the diligence of a computer?
Answer:
Running a search through a massive database for 24 hours straight.
** This task requires the computer to work continuously for a long period without any degradation in performance, which is a perfect example of its diligent nature.
56
The use of computers in banks has led to:
Answer:
Increased efficiency, accuracy, and convenience for customers
** Computerization has dramatically improved the banking industry by automating processes, reducing errors, and providing customers with convenient access to a wide range of services.
57
**What is a 'smart home', an application of computers in daily life?**
Answer:
A home equipped with lighting, heating, and electronic devices that can be controlled remotely by phone or computer
** Smart home technology uses computers and the internet to automate and control household appliances and systems, increasing convenience, energy efficiency, and security.
58
The use of biometric authentication (like fingerprints or facial recognition) in banking and for unlocking smartphones is an application of:
Answer:
Computer security
** Biometrics is a field of computer science that uses unique physical or behavioral characteristics for identification and access control, significantly enhancing security.
59
The main circuit board in a computer, to which all other components are connected, is the:
Answer:
Motherboard
** The motherboard, also known as the mainboard or logic board, is the central hub that holds and allows communication between many of the crucial electronic components of a system.
60
A computer that represents data in the form of continuous physical quantities is known as:
Answer:
Analog computer
** Analog computers work with continuous data, such as temperature, pressure, or voltage. They represent these quantities as analogous physical measurements, hence the name.