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
3451
Which term is used to describe RAM?
Answer:
All of the above (Dynamic RAM, Static RAM, Video RAM)
RAM includes various types such as DRAM, SRAM, and VRAM, serving different functions.
3452
Which device can directly input printed text?
Answer:
OCR (Optical Character Reader)
OCR devices scan and convert printed or handwritten text into digital form.
3453
Which type of computer chips are considered volatile?
Answer:
All of the above
RAM and DRAM lose their contents when power is off; ROM retains data.
3454
How is a translator best classified?
Answer:
System software
A translator (such as a compiler or interpreter) is system software that converts high-level code into machine code.
3455
What does ALU stand for?
Answer:
Arithmetic Logic Unit
The ALU (Arithmetic Logic Unit) performs mathematical and logical operations in the CPU[6](https://www.linkedin.com/pulse/understanding-central-processing-unit-cpu-brain-your-computer-ayaz-lzlqf).
3456
Which of these is a secondary memory device?
Answer:
Floppy disk
A floppy disk is a secondary memory device used for data storage.
3457
Which medium is commonly used to back up information from a hard disk?
Answer:
All of the above
Various media like magnetic tape, CDs, or floppy disks can be used for backups.
3458
Which of these is an advantage of CD-ROMs as storage media?
Answer:
All of the above
CD-ROMs are cost-effective, have high reliability, and can access data faster than magnetic disks.
3459
What happens when a disk is formatted?
Answer:
Data is deleted from the disk
Formatting erases existing data on the disk preparing it for new data storage.
3460
What does modem stand for?
Answer:
Modulator demodulator
A modem modulates and demodulates signals for communication over telephone lines or other media.