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
4371
What does the "hidden" file attribute do?
Answer:
It makes the file invisible in standard directory listings
Hidden files are not shown by default in graphical file explorers or with basic `ls`/`dir` commands. They are often used for system or configuration files that users shouldn't normally interact with.
4372
The `/etc` directory in Linux is primarily used for:
Answer:
Storing system-wide configuration files
The name `/etc` is a historical acronym for "et cetera", and it contains the configuration files for the operating system and installed services.
4373
The ".gif" extension is commonly used for:
Answer:
Simple animations and images with limited colors
The Graphics Interchange Format (".gif") is popular for its support of animations and transparency, making it suitable for web graphics and memes.
4374
The concept of a "working directory" refers to:
Answer:
The directory that a user or process is currently in
The working directory is the default location for file operations. Relative paths are interpreted starting from this directory.
4375
What does the file extension ".docx" typically indicate?
Answer:
A Microsoft Word document
The ".docx" extension is the default format for documents created in Microsoft Word since the 2007 version. It is based on the Office Open XML format.
4376
The process of creating a compressed archive is often called:
Answer:
Zipping
"Zipping" has become a common term for file compression, named after the popular .zip archive format.
4377
"Lossless" compression means that:
Answer:
No data is lost, and the original file can be perfectly recreated.
Lossless compression is crucial for file types where every bit of data is important, such as text documents and programs.
4378
What does the term "archive" refer to in the context of file compression?
Answer:
A single file that contains one or more other files, often in a compressed format.
An archive is a collection of files and directories that have been bundled into a single file for easier transportation or storage. While these archives are often compressed, they don't have to be.
4379
Which of these file extensions is commonly associated with an image file format?
Answer:
.png
The ".png" (Portable Network Graphics) extension is a popular raster graphics file format that supports lossless data compression.
4380
What is a `.rar` file?
Answer:
A type of compressed archive, similar to a `.zip` file.
RAR (Roshal Archive) is another popular format for file compression and archiving.