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
4471
The "Full Control" permission in Windows ACLs is a combination of which permissions?
Answer:
Read, Write, Execute, Modify, and Delete
"Full Control" is a convenient preset that grants a user or group all possible standard permissions on a file or folder, including the ability to change the permissions themselves.
4472
When saving a digital file for the very first time, what crucial piece of information must the user typically provide to the operating system?
Answer:
A unique filename and its storage location.
When a digital file is saved for the first time, the operating system needs two primary pieces of information to manage it effectively: a unique filename to distinguish it from other files, and a specific storage location (path within a folder or directory) to know where to store and retrieve it from later. Without both a filename and a location, the system cannot properly catalog or access the file. Options A, C, and D are not fundamental requirements for the initial saving of a file; encryption, application metadata, and compression are either optional or handled automatically by the system/application, not usually a direct user input requirement for the initial 'save as' action.
4473
The operation of opening a document, changing some text, and saving it involves which two fundamental operations?
Answer:
Read and Write
When you open a file, the system performs a "read" operation to load its contents. When you save your changes, it performs a "write" operation to update the file on the disk.
4474
Renaming "image.jpg" to "image.txt" will:
Answer:
Change how the operating system attempts to open the file, but not its actual content
Changing a file's extension does not change its underlying data or format. It only changes the association the OS has with it, which will likely cause an error if you try to open it with the newly associated program (e.g., Notepad).
4475
What is the file extension for command files in MS-DOS?
Answer:
.com
MS-DOS uses the .com extension for executable command files. [cite: 172, 173]
4476
Which of these extensions is for a vector graphics file, which can be scaled to any size without losing quality?
Answer:
.svg
Scalable Vector Graphics (".svg") is an XML-based vector image format. Unlike raster formats (.bmp, .png), vector images are defined by points and lines, allowing for infinite scaling.
4477
The "Write" permission allows a user to:
Answer:
Change or modify the contents of the file
Write permission is required to alter the data in a file, including adding, deleting, or changing its content. This permission also often allows the file to be deleted.
4478
Which of the following acts as the file manager for Windows?
Answer:
Windows Explorer
Windows Explorer (or File Explorer) is the built-in file manager for the Windows operating system. It allows users to view, open, copy, move, and delete files and folders.
4479
What should be the extension for executable files?
Answer:
All of the above
All these extensions—.EXE, .COM, and .BAT—are recognized as executable formats in many operating systems.
4480
A file extension is separated from the file name by which symbol?
Answer:
Period
A period separates a file name from its extension, such as .txt or .jpg.