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
321
Which input device can identify the price of a chocolate bar?
Answer:
Bar code reader
Bar code readers scan barcodes to retrieve product information such as price.
322
What part of a computer temporarily holds data before processing?
Answer:
Memory
Memory acts as a holding area for active tasks and data during operations.
323
Which key is not present on standard PC keyboards?
Answer:
Turn
“Turn” is not a recognized key;
324
The Internet was originally a project of which government agency?
Answer:
ARPA
ARPA (Advanced Research Projects Agency) initiated the development of what would become the internet.
325
Multiple choice exam answer sheets can be automatically evaluated by:
Answer:
Optical Mark Reader (OMR)
OMR detects marks on answer sheets to automatically grade multiple choice tests.
326
Chips that can be reprogrammed using special external equipment are:
Answer:
PROM
Programmable ROM (PROM) chips can be programmed once after manufacturing.
327
What device category includes printers and monitors?
Answer:
Output Units
Output devices are any pieces of computer hardware that convert information into human-perceptible form. Monitors display visual information (soft copy), and printers create physical copies of information (hard copy). Both are used to present the results of the computer's processing.
328
What type of memory serves as an intermediary between the CPU and main memory?
Answer:
Cache memory
Cache memory is a small, extremely fast type of volatile memory that is built into the CPU or placed on a separate chip with a direct connection to the CPU. It acts as a buffer between the CPU and the main RAM, storing frequently accessed data and instructions to speed up processing.
329
Processing refers to what?
Answer:
Processing strings of numbers and special symbols
Processing involves handling and manipulating strings composed of numbers, letters, and special characters.
330
The main system board of a computer is called:
Answer:
Motherboard
The motherboard holds the CPU, memory, and essential components for system operation.