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
11
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.
12
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.
13
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.
14
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.
15
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.
16
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.
17
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.
18
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.
19
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.
20
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.