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
341
Which device is directly controlled from a keyboard?
Answer:
Card punch
A card punch machine creates punched cards from keyboard input for data storage.
342
Programs stored in ROM are called what?
Answer:
Firmware
Firmware is permanent software programmed into read-only memory.
343
A bootstrap is:
Answer:
A small initialization program to start a computer
The bootstrap loads the operating system during the computer's startup process.
344
Why is the computer mouse called a "mouse"?
Answer:
Its cable looks like a tail
The mouse is named for its tail-like cable that extends from the device.
345
Which type of memory does not forget its contents?
Answer:
ROM
ROM (Read-Only Memory) is non-volatile, meaning it retains data even when the power is off.
346
Which of the following is a secondary memory device?
Answer:
Disk
Disks provide secondary (non-volatile) storage, unlike input or processing units.
347
A single binary digit is called a ______.
Answer:
bit
A bit is the smallest unit of digital data in computing and can have a value of 0 or 1[12](https://www.merriam-webster.com/dictionary/bit)[13](https://www.vocabulary.com/dictionary/bit).
348
The language a computer can understand and execute is called:
Answer:
Machine language
Machine language is the binary code directly executed by the computer's processor.
349
Where are the letters QWERTY found?
Answer:
Keyboard
QWERTY refers to the standard arrangement of letters on a keyboard used for typing.
350
Access time is defined as:
Answer:
Seek time plus latency time
Access time is the total delay before data transfer, including seek and latency times.