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
3481
Which of the following is not a type of memory?
Answer:
NIC
NIC (Network Interface Card) is a networking device, not a memory type.
3482
The decimal number system has base:
Answer:
10
Decimal uses ten digits (0-9).
3483
Which is used as a primary storage device?
Answer:
PROM
PROM is a type of read-only memory used as primary storage in some contexts.
3484
What type of device is a light pen?
Answer:
Optical input device
A light pen detects light from a screen, allowing direct interaction with display elements.
3485
What does "bug" mean?
Answer:
A logical error in a program
A bug is generally an error or fault in software causing incorrect or unexpected results.
3486
Terminals are required for which computing scenarios?
Answer:
Real time, time-sharing, and distributed message processing
Terminals provide input/output in scenarios involving real-time, distributed, or shared access.
3487
Identify the incorrect definition:
Answer:
Access time means time to access the output
Access time refers to the time needed to retrieve data from storage, not output access.
3488
What does CD-ROM stand for?
Answer:
Compact Disk Read Only Memory
CD-ROM is an acronym for Compact Disc Read-Only Memory. It is a type of optical disc that contains data that can be read but not written to or erased. This format was widely used for distributing software, music, and multimedia content.
3489
Storage is also known as ________?
Answer:
All of above
The terms secondary storage, auxiliary storage, and mass storage are often used interchangeably to refer to non-volatile storage that is not directly accessible by the CPU. This includes devices like hard disk drives, SSDs, and optical drives, which are used for long-term data retention.
3490
What is the control unit of a digital computer often called?
Answer:
brain
The control unit (CU) is a core component of the CPU that directs the operations of the processor. It is often referred to as the 'nerve center' of the computer, as it manages and coordinates all the computer's activities. The term 'brain' is often used more broadly for the entire CPU, but in this context, it relates to the control function.