Computer Knowledge (Set-I)

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Computer Knowledge

Key Details
Subject – Computer Knowledge
Time- 5 Mins
For SSC, BANKING, RAILWAY, DEFENCE and all other Exams
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1 / 10

1. Sometimes the mouse pointer moves erratically. This is because of ___.

IRQ setting is not proper

The virus in the system

Mouse ball is dirty

The driver is not installed properly

2 / 10

2. The resolution of Laser Printers are specified in terms of __?

CPM

PPM

DPI

LPM

3 / 10

3. _____ is the translator which performs macro expansion tasks.

Macro preprocessor

Macro processor

Macro pro-processor

Assembler

Explanation:
A Macro processor is responsible for performing macro expansion. Macros are sequences of instructions or code that are defined once and can be reused multiple times in the program. The macro processor replaces macro calls with their expanded code before the actual assembly or compilation process.
Macro preprocessor and Macro pro-processor are not commonly used terms in the context of programming and macro handling.
An Assembler translates assembly language into machine code but does not handle macro expansion directly.
Thus, Macro processor is the translator responsible for macro expansion tasks.

4 / 10

4. Which of the following is not an input device?

VDU

Keyboard

Monitor

Light Pen

Explanation:
VDU (Visual Display Unit): This term generally refers to a display screen, and in some contexts, it is considered an output device, though it’s often associated with input-output functionalities.
Keyboard: An input device used to enter text and commands.
Monitor: An output device, as it displays information from the computer but does not send data to it.
Light Pen: An input device used to interact with the screen by detecting light.

5 / 10

5. ____ is known as the translator for low-level programming language.

Compiler

Linker

Loader

Assembler

Explanation:
An Assembler is a specialized translator that converts assembly language (a low-level programming language) into machine code (binary instructions that the computer’s CPU can execute).
A Compiler translates high-level programming languages (like C or Java) into machine code or intermediate code.
A Linker combines multiple object files (produced by a compiler or assembler) into a single executable program.
A Loader loads the executable program into memory for execution by the CPU.
Thus, the translator specifically for low-level programming languages (assembly language) is an Assembler.

Explanation:
A Scanner is a light-sensitive device that captures images, printed text, or drawings and converts them into digital form for further processing or storage on a computer.
A Plotter is an output device used to create large-scale graphics or engineering drawings.
A Printer is an output device that produces a physical copy of digital documents or images.
OMR (Optical Mark Recognition) is a specialized device used to read marks (such as answers in multiple-choice question papers) but does not convert images or text into digital form.
Thus, the device that converts printed text or images into digital form is a Scanner.

6 / 10

6. A light-sensitive device that converts the printed text, drawing, or other images into digital form is called ____.

Plotter

Printer

Scanner

OMR

7 / 10

7. A specialized program that allows user to utilize in a specific application is classified as…….

Application programs

Irelative programs

Relative programs

Replicate programs

Explanation:
Application programs are specialized software designed to perform specific tasks for the user, such as word processing, spreadsheet management, graphic design, or database management.
Examples include Microsoft Word, Excel, Photoshop, and web browsers.

8 / 10

8. Information travels between components to Motherboard through?

CMOS

Busses

Bays

Flash memory

The correct answer is Busses.
Explanation:
Busses are communication pathways on the motherboard that transfer data, signals, and power between various components, such as the CPU, memory, storage devices, and peripherals.
CMOS (Complementary Metal-Oxide Semiconductor) is a small amount of memory used to store BIOS settings but does not handle data transfer.
Bays are spaces within the computer case for installing devices like hard drives or optical drives, and they do not transfer information.
Flash memory is a type of storage used in devices like SSDs and USB drives but is not responsible for transferring data on the motherboard.

9 / 10

9. When referring to instruction words, a mnemonic is:

a short abbreviation for the data word stored at the operand address

a short abbreviation for the operand address

shorthand for machine language

a short abbreviation for the operation to be performed

Explanation:
Mnemonic is a human-readable abbreviation or symbol that represents a machine language instruction in assembly language. For example:
MOV (move data)
ADD (add values)
SUB (subtract values)
These are easier to understand and remember compared to binary machine code.
The other options do not correctly describe a mnemonic:
Abbreviation for data word stored at the operand address and abbreviation for the operand address are unrelated to mnemonics.
Shorthand for machine language is incorrect; mnemonics represent instructions in assembly language, not the raw machine language itself.

10 / 10

10. The data bus is ___ directional.

Single directional

Multi-directional

Bidirectional

None of the above

Explanation:
The data bus is used to transfer data between the CPU, memory, and other peripherals. It allows data to flow both to and from the CPU, making it bidirectional.
For example, the CPU reads data from memory (input) and writes data back to memory (output).
Single directional: This applies to some buses like the address bus, which typically transfers data in one direction (from CPU to memory/peripherals).
Multi-directional: Not a standard term in this context.

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