Computer Science - IT MCQs
Topic Notes: Computer Science - IT
<p>MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.</p>
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
1851
To make a laptop function as a desktop by connecting it to a monitor and other hardware, which accessory is used?
Answer:
Docking station
A docking station turns a notebook into a desktop by offering connectivity for displays and peripherals.
1852
An operating system?
Answer:
Provides a layered, user-friendly interface
The OS offers an interface to make computer use accessible to users.
1853
What type of memory acts as a high-speed buffer between the memory and CPU for faster processing?
Answer:
Cache memory
Cache memory is a small, very fast memory that sits between the CPU and the main RAM. It stores copies of the data from frequently used main memory locations to reduce the average time to access data from the main memory, thereby speeding up processing.
1854
Which of the following are considered input devices?
Answer:
All of these
Input devices are used to send data to a computer. A keyboard sends text data, a mouse sends positioning and click data, and a card reader sends data from a card (like a memory card or credit card). All three are examples of input devices.
1855
Time during which a job is processed by the computer is called:
Answer:
Execution time
Execution time is the actual time spent processing a task.
1856
What does DMA stand for in microprocessor terminology?
Answer:
Direct Memory Access
DMA stands for Direct Memory Access. It is a feature of computer systems that allows certain hardware subsystems to access main system memory (RAM) independently of the central processing unit (CPU), which improves performance by offloading memory transfer tasks from the CPU.
1857
Which video card is best suited for 3D gaming?
Answer:
ATI Radeon 9700 Pro
The ATI Radeon 9700 Pro is highly regarded for high-end 3D gaming performance.
1858
For connecting many computers over a wide geographic area, which medium is efficient?
Answer:
All of the above
Various media including satellites, twisted pair, and coaxial cables are used for wide area networking.
1859
Execution of multiple programs by a single CPU is?
Answer:
Multiprogramming
Multiprogramming allows one CPU to run multiple programs by managing CPU time efficiently.
1860
A remote control that is used to turn a machine on or off is also called a:
Answer:
Interface
An interface is a method of interacting with and controlling external devices or software systems.