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
1001
How are instructions and memory addresses typically encoded?
Answer:
Binary codes
Computer instructions and addresses are represented using binary code (0s and 1s).
1002
What happens in unconditional disk formatting?
Answer:
Destroys all data on the disk by overwriting
Unconditional formatting erases every piece of information on the disk by overwriting it, making data recovery very difficult.
1003
Which of the following organizes and controls hardware and software?
Answer:
Operating system
The operating system (OS) serves as the central manager for a computer. It organizes and controls all the hardware components (CPU, memory, disks) and software resources, ensuring they work together harmoniously and efficiently.
1004
A digitizing tablet is primarily used for which of the following?
Answer:
Tracing diagrams
Digitizing tablets allow users to trace images or create drawings, converting them into digital data for computers.
1005
"Ctrl + End" is used to
Answer:
Moves the cursor to the end of Document
** Ctrl + End moves the cursor to the very end (bottom) of the document.
1006
How does an impact printer form characters?
Answer:
An inked ribbon and print head
Impact printers work by striking an inked ribbon with a print head to create text or images on paper.
1007
If the displayed system time and date are incorrect, how can you reset them?
Answer:
Control panel
The system time and date are managed through the Control Panel's Date and Time settings.
1008
The smallest and most fundamental unit of data storage in computers is the:
Answer:
Bit
A bit (binary digit) is the basic unit of information in computing and can be a 0 or 1.
1009
What does ALU represent in computer terminology?
Answer:
Arithmetic Logic Unit
ALU stands for Arithmetic Logic Unit, the part of a computer processor that handles basic arithmetic and logical operations.
1010
Ctrl + Q is used to
Answer:
Remove Paragraph formatting (Line Space and Paragraph Space)
** Ctrl+Q removes paragraph-level formatting, restoring to default.