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
21
What technology transforms drawings, printed text, or images into a digital format?
Answer:
Scanner
A scanner is an input device that optically scans images, printed text, handwriting, or an object and converts it into a digital image. It is the primary tool used for digitizing physical documents and pictures.
22
What is commonly known as the "brain" of the computer?
Answer:
CPU
The Central Processing Unit (CPU) is called the brain of the computer because it manages operations, calculations, and the flow of information[6](https://www.linkedin.com/pulse/understanding-central-processing-unit-cpu-brain-your-computer-ayaz-lzlqf).
23
Memory is made up of_____________?
Answer:
Large number of cells
At its most fundamental level, computer memory is made up of a vast number of memory cells. Each cell is an electronic circuit that can store a single bit of information (a 0 or a 1). These cells are organized into groups (like bytes) and are accessed via a system of circuits and wires.
24
The motherboard is best described as what?
Answer:
Circuit board containing CPU and other chips
The motherboard connects and allows communication between the CPU, memory, and other components.
25
Which item does NOT belong with an Intel Pentium 4 platform?
Answer:
EDO/Fast-Page RAM
EDO/Fast-Page RAM is outdated and incompatible with Pentium 4 platforms.
26
A step-by-step procedure used to solve a problem is called a:
Answer:
Algorithm
An algorithm is a defined procedure for solving a computational or practical problem.
27
A type of core store with lower access time than working store devices in the same processor is called:
Answer:
Fast core
Fast core memory has shorter access times, improving processor performance.
28
What type of device is used for pointing and drawing?
Answer:
Mouse
A mouse is a quintessential pointing device used to control the cursor on a graphical user interface. It allows users to "point" at icons and menus, and its movement can be translated into drawing or selecting actions on the screen.
29
Why is the SHIFT key called "SHIFT"?
Answer:
Carry-over from typewriters using mechanical shifting for upper/lower case
The term originated from typewriters which mechanically shifted print heads to type capital letters.
30
Which register is loaded with the contents of the memory location pointed to by the Program Counter (PC)?
Answer:
Instruction register
The instruction register is loaded with the instruction fetched from the memory location addressed by the program counter.