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
91
Where does the CPU typically fetch the most frequently used program instructions to optimize processing speed?
Answer:
cache memory
Cache memory is a high-speed, small-capacity memory located close to or inside the CPU. It stores copies of the most frequently accessed data and instructions from the main memory (RAM).
92
What is the collective term for external equipment connected to a computer's CPU that the system can access?
Answer:
peripherals
Peripherals are auxiliary devices that connect to a computer to provide input, output, or storage capabilities.
93
What is the term for a set of tracks aligned vertically across multiple surfaces of a disk pack?
Answer:
Cylinder
A cylinder refers to the collection of all tracks located at the same radial distance from the center across all platters in a disk pack. This structure allows the read/write heads to access data efficiently without moving the arm assembly.
94
What is the primary function of a system bus within a computer architecture?
Answer:
connects various components within the computer
A system bus is a fundamental communication pathway that connects the CPU, memory, and input/output devices.
95
Which of the following optical storage media typically offers the highest data storage capacity?
Answer:
DVD
A standard Digital Versatile Disc (DVD) has a significantly higher storage capacity compared to a Compact Disc (CD). While a standard CD typically holds about 700 MB of data, a single-layer DVD can store 4.7 GB.
96
Which hardware component is widely considered the 'brain' of the computer system?
Answer:
CPU
The Central Processing Unit (CPU) is referred to as the brain of the computer because it performs the vast majority of processing tasks, executes instructions, and manages data flow between other hardware components within the system.
97
Within the computer memory hierarchy, which component provides the fastest access speed?
Answer:
Registers
Registers are located directly inside the CPU and are the fastest form of memory in the hierarchy. They hold the data currently being processed by the processor. While cache and RAM are fast, they are located further from the CPU core than registers.
98
What term describes the measurement of the distance between sub-pixels on a monitor, which influences the sharpness of the displayed image?
Answer:
dot pitch
Dot pitch, also referred to as stripe pitch or phosphor pitch, is a technical specification for display devices. It measures the distance between the centers of two adjacent pixels of the same color.
99
Where is the Basic Input/Output System (BIOS) firmware typically stored?
Answer:
ROM
The BIOS is firmware stored on a non-volatile ROM chip located on the motherboard. This ensures that the instructions required to boot the computer are preserved even when the power is turned off.
100
Which control mechanism in a microprocessor manages bus traffic to prevent multiple devices from accessing the bus simultaneously?
Answer:
Bus arbitration
Bus arbitration is the critical process by which the system determines which device becomes the bus master, ensuring orderly access and preventing data collisions.