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
591
In the phrase "light weight process," the weight refers to:
Answer:
Number of resources
A lightweight process (thread) is "lightweight" because it requires fewer system resources to create and manage compared to a traditional heavyweight process.
592
Which of the following is an example of a hard real-time operating system?
Answer:
VxWorks
VxWorks is a popular real-time operating system used in a variety of embedded systems.
593
The term "hard copy" refers to:
Answer:
Printed output
"Hard copy" means information produced on paper or other tangible media, such as printouts from a computer.
594
Which of these is not related to the Control Panel in Windows?
Answer:
Run application
The "Run" utility is accessed separately and is not managed through the Control Panel, unlike printers, fonts, and keyboards.
595
What is "Dr. Watson" in computing?
Answer:
Diagnosis tool
Dr. Watson is a diagnostic utility tool in Windows used to log and troubleshoot errors.
596
A ______ represents nearly one billion memory locations.
Answer:
Gigabyte
One gigabyte (GB) is approximately equal to one billion bytes, or memory locations, in computer storage.
597
"Ctrl + Up Arrow" is used to
Answer:
Moves the cursor one paragraph up
The correct answer is D) Moves the cursor one paragraph up. When you press the "Ctrl" key in combination with the "Up Arrow" key, the cursor's movement is not limited to a single line or a page. Instead, it intelligently navigates between the beginning of paragraphs. Each press of "Ctrl + Up Arrow" will move the cursor to the start of the preceding paragraph. This is a very efficient shortcut for navigating through longer documents where paragraphs are used as logical breaks in the text. Option A is incorrect because moving one page up is typically achieved with "Page Up" or "Ctrl + Page Up". Option B is incorrect because moving one line up is the function of the "Up Arrow" key by itself. Option C is incorrect; while it might sometimes *appear* to move the cursor up a screen, its primary and consistent function is paragraph-based navigation, and the "Page Up" key is designed for screen-based scrolling.
598
What is found inside a light pen?
Answer:
Light sensitive elements
Light pens use light-sensitive components to detect the position on the screen, enabling direct drawing or selection.
599
Which command would you use to copy a file named "report.txt" from the current directory to a directory named "backup"?
Answer:
Either A or B, depending on the operating system
You would use the `copy` command in Windows and the `cp` command in Linux or macOS.
600
Which command would you use to copy all files with a ".txt" extension from the current directory to a directory named "documents"?
Answer:
Both A and B, depending on the operating system
The `*` wildcard is used to match any number of characters, so `*.txt` will match all files that end with ".txt".