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
2621
The use of computers in banking that allows customers to manage their accounts from anywhere using the internet is called:
Answer:
Online banking or internet banking
** Online banking allows customers to conduct a wide range of financial transactions through the financial institution's website or mobile app, providing convenience and 24/7 access to their accounts.
2622
The speed of a computer is typically measured in:
Answer:
Megahertz (MHz) or Gigahertz (GHz)
** The speed of a computer's processor (CPU) is measured in terms of its clock speed, which is expressed in Hertz (Hz). Common units are Megahertz (MHz), representing millions of cycles per second, and Gigahertz (GHz), representing billions of cycles per second.
2623
The basic operations performed by a computer are__________?
Answer:
All the above
Computers are versatile machines capable of performing a wide range of basic operations. These include arithmetic operations like addition and subtraction, logical operations such as comparisons (e.g., AND, OR), and the ability to store and retrieve data. Therefore, all the listed options are fundamental operations performed by a computer.
2624
Which of the following is NOT a direct application of computers in banking?
Answer:
Printing physical currency notes
** While computers are used in the design and security features of currency, the physical printing process is a specialized industrial printing operation, not a typical banking application of computers.
2625
A 'workstation' is a high-end:
Answer:
Microcomputer
** A workstation is a powerful single-user microcomputer that is designed for demanding tasks like computer-aided design (CAD), 3D graphics, or software development. It is more powerful than a standard desktop PC.
2626
Using a spreadsheet application like Microsoft Excel for managing a personal budget is an example of using a computer for:
Answer:
Personal finance management
** Spreadsheet software is a powerful and versatile tool that is widely used in daily life and business for tasks involving calculations, organization, and financial management.
2627
A mainframe computer is primarily used for:
Answer:
Bulk data processing and enterprise resource planning for large organizations
** Mainframes are large, powerful computers that are used by corporations and government agencies for critical applications that involve processing large volumes of transactions and data, such as census, industry statistics, and financial transaction processing.
2628
What best defines the traits of a computer?
Answer:
All of the above
Computers exhibit several key traits that make them powerful tools. They are highly accurate in their calculations, but this accuracy depends on correct input (the "garbage in, garbage out" principle). They are also very reliable due to their solid-state electronic components. Finally, unlike humans, they possess diligence, meaning they can perform repetitive tasks continuously without fatigue or loss of concentration. All the given options are correct descriptions of these traits.
2629
The main reason for the widespread use of digital computers is their:
Answer:
Versatility and cost-effectiveness
for the widespread use of digital computers is their:
2630
What characterizes a contemporary digital computer?
Answer:
An electronic automated machine capable of solving problems with words and numbers
A modern digital computer is a versatile, programmable electronic machine. Its defining characteristic is its ability to automatically process a wide range of data, including both text (words) and numerical values, to solve various problems based on a set of stored instructions.