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
1
What term describes the number of individual records grouped together within a single block of data on magnetic tape?
Answer:
blocking factor
The blocking factor refers to the number of logical records that are stored within a single physical block on a storage medium like magnetic tape.
2
Which type of terminal produces output that most closely resembles the graphical output generated by a plotter?
Answer:
graphics terminal
A graphics terminal is designed to display complex visual information, including lines, curves, and shapes, which aligns with the high-precision vector-based output characteristic of a plotter.
3
What is the term for the average time required for a specific disk sector to rotate under the read/write head?
Answer:
Rotational delay
Rotational delay, also known as latency, is the time it takes for the disk to rotate so that the desired sector is positioned directly under the read/write head.
4
Which hardware device performs a function that is functionally opposite to that of a keyboard?
Answer:
Printer
A keyboard is an input device used to enter data into a computer system.
5
What is the technical term for the process of retrieving data from a specific memory location?
Answer:
Reading
In computer architecture, the process of accessing and retrieving information stored at a specific memory address is known as a 'read' operation.
6
What term describes a memory system where any storage location can be accessed in a fixed and minimal amount of time?
Answer:
random-access memory
Random-access memory (RAM) is defined by its ability to access any data address directly, regardless of its physical location, in a constant amount of time.
7
What is the full form of the acronym LED in the context of display technology?
Answer:
Light Emitting Diode
LED stands for Light Emitting Diode. It is a semiconductor device that emits light when an electric current flows through it.
8
Which component is primarily responsible for supervising and managing computer activities?
Answer:
CU
The Control Unit (CU) is a component of the CPU that directs the operation of the processor.
9
What is the primary function of a computer port?
Answer:
Communicate with other computer peripherals
In computer hardware, a port serves as an interface between the computer and other computers or peripheral devices. In computer terms, a port generally refers to the female part of connection.
10
Which register holds the instruction fetched from the memory location indicated by the Program Counter?
Answer:
Instruction Register
The Instruction Register (IR) is a critical component of the CPU's control unit. Once the CPU fetches an instruction from memory, it is stored in the IR.