Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
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
1901
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.
1902
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.
1903
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.
1904
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.
1905
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.
1906
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.
1907
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.
1908
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.
1909
Which key is not present on standard PC keyboards?
Answer:
Turn
“Turn” is not a recognized key;
1910
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.