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
321
Moving data to a different location is called:
Answer:
Block move
A block move is an operation that transfers a contiguous block of data from one memory or storage location to another.
322
What is the OS used to operate mobile phones called?
Answer:
Embedded OS
Most mobile phones use embedded operating systems, designed specifically for the device hardware.
323
The Scandisk utility can:
Answer:
All of the above
Scandisk checks for errors, provides disk information, and can be executed from DOS, making it a versatile disk utility.
324
The Round-robin scheduling method is a pre-emptive version of:
Answer:
FIFO
Round-robin scheduling is similar to First-In, First-Out (FIFO), but it adds preemption by assigning a fixed time slice to each process.
325
The ability of an operating system to execute different parts of the same program simultaneously is called:
Answer:
Multithreading
Multithreading is the ability of a central processing unit (CPU) (or a single core in a multi-core processor) to provide multiple threads of execution concurrently, supported by the operating system.
326
What is the section of the taskbar containing icons for background running applications called?
Answer:
System tray
The system tray, found on the right side of the taskbar, displays icons of system and background applications such as volume, network, and antivirus software.
327
When you open "My Computer" on the desktop, you see information about:
Answer:
All of the above
“My Computer” displays all connected storage devices, including hard disks, CDs, and removable disks.
328
The concept of "sudo" or "root" access is a key security feature of which operating systems?
Answer:
Linux and macOS
In Unix-like operating systems like Linux and macOS, the "root" user has administrative privileges. The "sudo" command allows a permitted user to execute a command as the superuser or another user.
329
Which of the following correctly pairs a vendor with its operating system?
Answer:
Redhat Linux
Red Hat is known for its Linux operating system distribution. The other combinations are incorrect.
330
Which of the following is an example of a single-user operating system?
Answer:
MS-DOS
MS-DOS is a single-user, single-tasking operating system.