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
4301
The term "parent directory" refers to:
Answer:
The directory that contains the current directory.
The parent directory is the directory immediately above the current one in the hierarchy.
4302
Which Windows component provides the primary graphical interface for managing files, folders, and storage devices?
Answer:
File Explorer (formerly Windows Explorer)
File Explorer, previously known as Windows Explorer, is the essential file management utility in the Microsoft Windows operating system. It offers a graphical user interface (GUI) that enables users to browse, open, copy, move, delete, and organize files and folders stored on their computer's hard drives, network drives, and external storage devices. Options A, C, and D are incorrect as they serve different purposes: Internet Explorer/Microsoft Edge for web browsing, Control Panel for system settings configuration, and Windows Media Player for multimedia playback.
4303
A password-protected .zip file uses what to secure its contents?
Answer:
Encryption
Adding a password to an archive encrypts the data. Without the correct password, the files cannot be decrypted and therefore cannot be extracted in their original, usable form.
4304
What is a self-extracting archive?
Answer:
An executable file that can decompress its own contents without needing separate software
A self-extracting archive (often with an .exe extension) bundles the compressed data with a small decompression program, making it easy for a recipient to extract the files even if they don't have the compression utility installed.
4305
If a program crashes while writing to a file, the file may become:
Answer:
Corrupted
An incomplete write operation can leave a file in an inconsistent or unreadable state, meaning it has become corrupted. Journaling file systems help to mitigate this risk.
4306
What does the "write" operation on a file typically do?
Answer:
It adds new data to the file or modifies existing data.
The write operation is used to save changes to a file. This can involve adding new content, overwriting existing content, or appending data to the end of the file.
4307
When is a file typically permanently deleted from the system?
Answer:
When the Recycle Bin or Trash is emptied
Emptying the Recycle Bin or Trash confirms that you want to permanently remove the files. The operating system then marks the space occupied by those files as available for new data.
4308
Which keyboard shortcut is commonly used to rename a selected file or folder within most graphical user interfaces, such as Windows File Explorer?
Answer:
F2
In popular operating systems like Microsoft Windows, and many other graphical user interfaces (GUIs), the F2 key is the standard shortcut for renaming a selected item, whether it's a file, folder, or even an icon on the desktop. To use it, you first select the item you wish to rename by clicking on it, and then press the F2 key. This action typically highlights the item's current name, allowing you to type in a new one.
* **F1** is generally used to open the help menu or support for the active program.
* **F3** is often used to open a search function within an application or the operating system.
* **F4** can close the active window (when pressed with Alt) or open the address bar dropdown in File Explorer/browser.
4309
What does the "Read" permission on a file typically allow a user to do?
Answer:
Open and view the file's contents
Read permission grants the ability to access and see the data within a file, but not to change it.
4310
What is the purpose of the `/bin` directory in a standard Linux file system?
Answer:
To store essential user command binaries (executable programs)
The `/bin` directory contains fundamental command-line programs like `ls`, `cp`, and `mv` that are needed by both the system and users.