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
131
Which of these is a type of semiconductor memory?
Answer:
RAM
RAM (Random Access Memory) stores active processes and is built using semiconductor technology.
132
Which is NOT a valid floppy disk capacity?
Answer:
1.24 MB
1.24 MB is not a standard floppy disk size.
133
What is the file extension used for Word 2007 documents?
Answer:
.DOCX
".docx" is the default extension for files created with Microsoft Word 2007 and newer[16](https://testbook.com/question-answer/the-extension-for-an-ms-word-2007-file-is--5f7ae9b4652dbda91a99150e)[17](https://www.bu.edu/tech/services/teaching/lms/blackboard/how-to/windows/).
134
Which register is accountable for keeping track of the memory address where the subsequent instruction will be retrieved from?
Answer:
Program Counter
The Program Counter (PC) is a special register within the CPU that holds the memory address of the next instruction to be fetched for execution. After an instruction is fetched, the PC is incremented to point to the next instruction in the sequence.
135
Which of the following is a pointing device?
Answer:
Touch screen
A touch screen functions as a pointing device by detecting user input through touch.
136
The contents of ____ are lost when the computer is turned off.
Answer:
Memory
Volatile memory like RAM loses its contents when power is off.
137
Which operation is NOT performed by the CPU?
Answer:
All of the above
The CPU performs all listed operations.
138
Codes made up of bars or lines of varying widths or lengths that a computer can read are called:
Answer:
Bar code
Bar codes are machine-readable codes represented by various width bars and spaces.
139
Which generation involved using integrated circuits?
Answer:
Third generation
Integrated circuits were first used in the third generation of computers.
140
Memory programmed at manufacture time is called:
Answer:
ROM
ROM is programmed during manufacturing and is non-volatile.