Advance Computer Science

Fundamentals of Computer

50,000+ Questions

Previous Year Papers

Detailed Solutions

Hindi & English

MEDIUM

Assertion (A): The processor is often called the 'brain' of the computer.
Reason (R): The processor is responsible for all operations and contains the Control Unit and Arithmetic Logic Unit.

Select the correct answer:

Both A and R are true and R is the correct explanation of A

Both A and R are true but R is not the correct explanation of A

A is true but R is false

A is false but R is true

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Both A and R are true and R is the correct explanation of A.
Core Concept: The title 'brain' is attributed to the processor precisely because it executes all logical and control operations via its internal components (CU and ALU).

🧠 Solution Blueprint

Assertion Analysis: The processor is indeed the central processing unit, acting as the 'brain'.
Reason Analysis: The reason explains the 'why'—it performs all operations using its two core sub-units: Control Unit and ALU.

MEDIUM

Assertion (A): Plotters are preferred over standard printers for creating construction plans. Reason (R): Plotters use pens, pencils, or markers to produce large-scale drawings.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Both A and R are true and R is the correct explanation of A.
Core Concept: The physical mechanism of plotters (using pens/markers) directly enables the high-quality, large-format output required for construction plans.

🧠 Solution Blueprint

Reasoning:
- Assertion is true: Plotters are the industry standard for large drawings.
- Reason is true: The use of pens/markers is the specific technology that allows plotters to handle large-scale vector-based drawings effectively.

UPSSSC JE-2016

MEDIUM

The main parts of computer are

Explanation

The main parts of a computer are generally considered to be 4 (CPU, Input, Output, Memory), but classification may vary. According to the exam key, option (a) is correct.

MEDIUM

Regarding Magnetic Ink Character Recognition (MICR), which of the following is true?

It reads bar codes consisting of dark and light lines.

It examines information in the form of a matrix to identify codes and check numbers.

It converts spoken sound into digital form.

It is exclusively used for gaming simulators.

Explanation

🌟 Quick Verification

Direct Answer: It examines information in the form of a matrix to identify codes and check numbers.

🧠 Concept Blueprint

MICR Functionality: MICR is a specialized technology used primarily in banking. The check characters are printed using magnetic ink, which allows the reader to examine the shape of the characters as a matrix to ensure accurate processing of financial documents.

UPSSSC JE-2015

MEDIUM

The main purpose of software is to convert data into

Website

Information

Program

Object

Explanation

Software processes data (raw facts) and converts it into useful Information.

No credit card required

MEDIUM

The ALU of a computer responds to the commands coming from.

Primary memory

Control section

External memory

Cache memory

Explanation

The Control Unit (section) directs the operation of the ALU.

MEDIUM

Assertion (A): Digital computers are the most widely used type of computer in modern society.
Reason (R): Digital computers process information by converting it into discrete electronic signals representing 0s and 1s.

Which of the following is correct?

Both (A) and (R) are true, and (R) is the correct explanation of (A)

Both (A) and (R) are true, but (R) is not the correct explanation of (A)

(A) is true, but (R) is false

(A) is false, but (R) is true

Explanation

🌟 Quick Verification

Direct Answer: Both (A) and (R) are true, and (R) is the correct explanation of (A).

🧠 Concept Blueprint

Logical Link: Digital computers have become the standard because of their ability to handle vast amounts of information efficiently using binary logic. The reason for their ubiquity is precisely their reliance on discrete data representation, which makes them highly versatile, accurate, and easy to scale compared to the specialized nature of analog devices.

💡 Exam Strategy & Trivia

Note

Exam Trap: Don't confuse 'Electronic form' with 'Binary'. While Digital computers use electronic form to store data, the fundamental nature of their processing is the binary conversion of discrete units.

EASY

Which of the following is NOT a characteristic of a non-impact printer?

They are noise-free devices.

They use ink splashes to print.

They print by hitting a paper, ribbon, and character together.

They use electrostatic chemicals for printing.

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is They print by hitting a paper, ribbon, and character together.
Core Concept: Impact printers rely on physical contact (hitting), whereas non-impact printers do not.

🧠 Concept Blueprint

Distinction:
- Impact printers require physical impact (hitting the ribbon against the paper).
- Non-impact printers are defined by their noise-free operation and the use of ink splashes or electrostatic chemicals.

MEDIUM

Which of the following is the correct sequence of steps or definitions related to computer data representation and processing?

Scanner (Physical to Digital) -> Binary (0 & 1) -> Machine Language (Binary Code) -> Executing (Carrying out commands)

Binary (0 & 1) -> Scanner (Physical to Digital) -> Executing (Carrying out commands) -> Machine Language (Binary Code)

Machine Language (Binary Code) -> Executing (Carrying out commands) -> Scanner (Physical to Digital) -> Binary (0 & 1)

Executing (Carrying out commands) -> Machine Language (Binary Code) -> Binary (0 & 1) -> Scanner (Physical to Digital)

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Scanner (Physical to Digital) -> Binary (0 & 1) -> Machine Language (Binary Code) -> Executing (Carrying out commands).
Core Concept: Data flow in a computer system follows a logical progression from input conversion to machine-level execution.

🧠 Solution Blueprint

Process Flow:
- Input: A scanner converts physical media to digital.
- Representation: Digital data is stored as binary (0 & 1).
- Language: Binary code forms the machine language.
- Action: The CPU performs executing to carry out these commands.

MEDIUM

Match the following hardware components with their specific technical attributes: A. SMPS 1. Converts physical images to digital form B. Scanner 2. Converts high AC voltage to low DC voltage C. Trackball 3. Pointing device that does not require a flat surface D. Plotter 4. Uses pens/markers for large-scale graphics

A-2, B-1, C-3, D-4

A-1, B-2, C-3, D-4

A-2, B-3, C-1, D-4

A-4, B-1, C-3, D-2

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is A-2, B-1, C-3, D-4.
Core Concept: Hardware devices serve distinct roles in power management, input, and output.

🧠 Solution Blueprint

SMPS: Power supply unit for voltage conversion.
Scanner: Digitizes paper images.
Trackball: Stationary pointing device.
Plotter: High-quality output for large drawings.

Full Mock Tests

Take Full-Length Mock Tests

Test your complete preparation with timed mock tests. Get detailed analytics and compare scores with other aspirants.

Explore Test Series

EASY

If the octal number 42500 has an 8th complement of 35300, what is the primary characteristic of the power signal mentioned in the context?

Finite energy

Infinite energy

Discrete time representation

Analog pulse supply

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Infinite energy.
Core Concept: Signal theory defines power signals by their energy characteristics.

🧠 Solution Blueprint

Fact Retrieval:
- The provided facts explicitly state that the characteristic of a power signal is infinite energy.
- The octal complement information is provided as context but is not required to identify the definition of a power signal.

EASY

Which unit of the computer acts as the bridge or link between the user and the computer system?

Memory Unit

Input Unit

Output Unit

Control Unit

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Input Unit.

🧠 Concept Blueprint

Definition: The Input Unit is defined specifically as the device used to enter data or instructions. It serves as the functional interface/link connecting the end-user to the machine's internal processing cycle.

💡 Exam Strategy & Trivia

Tip

Visual Aid: In the provided flowchart, the Input unit is the first entity in the chain, preceding the Memory, verifying its role as the point of entry for the user.

MEDIUM

Which device is described as an 'electro-optical pointing device' that uses a photosensitive detector?

Joystick

Light Pen

Trackball

Digitizer

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Light Pen.
Core Concept: A light pen is specifically defined by its electro-optical nature and photosensitive detector.

🧠 Solution Blueprint

Light Pen: An electro-optical device used to select objects on a display screen using a photosensitive detector.
Comparison: Joysticks use sticks on a base; Trackballs use a rotating ball; Digitizers use a pen and pad for graphics.

MEDIUM

Assertion (A): Secondary memory is essential for long-term data storage in a computer system.
Reason (R): Secondary memory devices are non-volatile and are not directly accessed by the CPU compared to primary memory.

Select the correct option:

Both A and R are true, and R is the correct explanation of A

Both A and R are true, but R is not the correct explanation of A

A is true, but R is false

A is false, but R is true

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Both A and R are true, and R is the correct explanation of A.

🧠 Concept Blueprint

Secondary Memory Utility: Since primary memory (RAM) is volatile (cleared when powered off), non-volatile secondary storage (HDD/SSD/Tape) is required for persistent data retention.
CPU Access: Primary memory is 'Internal' and accessed directly by the CPU for execution, whereas secondary memory needs to be loaded into the primary memory for processing.

MEDIUM

Consider the following statements regarding signal types used in data representation:

Analog signals are defined as continuous signals where the time-varying feature represents a time-varying quantity.
Digital signals are composed of a sampled sequence of quantized values, avoiding electronic noise and distortion.
Analog signals are represented in discrete forms, while digital signals are represented as wave forms.

Which of the statements given above are correct?

1 and 2 only

2 and 3 only

1 and 3 only

1, 2, and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is 1 and 2 only.
Core Concept: Understanding the fundamental differences between Analog and Digital signal representations.

🧠 Concept Blueprint

Analog Signals: These are continuous signals (like sound waves) where the feature varies smoothly. They utilize a continuous range of voltage values.
Digital Signals: These are discrete representations (sampled sequence of quantized values). They are preferred in computers as they effectively reject electronic noise and distortion.
Why Statement 3 is Incorrect: It is the opposite of the truth. Analog signals are represented as wave forms, whereas digital signals are represented in discrete forms.

💡 Exam Strategy & Trivia

Tip

Exam Trap: Always remember that digital signals are the ones that are resistant to noise, not analog signals. Analog signals are naturally occurring (voice/sound) but harder to protect from interference.

UPPCL-JE 31-01-2019 (Batch -01)

MEDIUM

The technology of scanning that recognized handwritten text and printed text is.

MICR

OMR

OCR

BCR

Explanation

OCR (Optical Character Recognition) converts handwritten or printed characters into machine-readable text.

EASY

Match the following data units with their equivalent bit sizes:

A: Nibble, B: Byte, C: Word, D: Double word | 1: 8 bits, 2: 32 bits, 3: 4 bits, 4: 16 bits

A: Nibble, B: Byte, C: Word, D: Double word | 1: 4 bits, 2: 8 bits, 3: 16 bits, 4: 32 bits

A: Nibble, B: Byte, C: Word, D: Double word | 1: 16 bits, 2: 8 bits, 3: 4 bits, 4: 32 bits

A: Nibble, B: Byte, C: Word, D: Double word | 1: 32 bits, 2: 16 bits, 3: 8 bits, 4: 4 bits

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is A: 4 bits, B: 8 bits, C: 16 bits, D: 32 bits.
Core Concept: Data units in computing are defined by specific bit-length combinations.

🧠 Solution Blueprint

Mapping:
- Nibble: 4 bits
- Byte: 8 bits
- Word: 16 bits
- Double word: 32 bits

MEDIUM

Consider the following: 1. A Voltmeter is an Analog computer. 2. A Digital computer uses continuous comparison. Which of the above is/are correct?

Only 1

Only 2

Both 1 and 2

Neither 1 nor 2

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is Only 1.
Core Concept: Analog computers use continuous comparison; Digital computers use discrete binary data.

🧠 Solution Blueprint

Step-by-Step Solution:
- Statement 1 is correct: A Voltmeter measures physical units (voltage) and is an analog device.
- Statement 2 is incorrect: Digital computers do not use continuous comparison; that is the property of analog computers.

MEDIUM

The examination and changing of single bits or small groups of his within a word is called.

Bit

Bit manipulation

Byte

Bit Slice

Explanation

Bit manipulation is the process of acting on individual bits or small groups of bits.

HARD

Consider the following statements: 1. SRAM is faster than DRAM. 2. ROM can be used to store data permanently and delete it easily. 3. EEPROM stands for Electrically Erasable Programmable ROM. Which of the statements are correct?

1 and 2

2 and 3

1 and 3

1, 2, and 3

Explanation

🌟 Quick Verification

Direct Answer: The correct answer is 1 and 3.
Core Concept: SRAM is faster than DRAM, and EEPROM is indeed Electrically Erasable, but standard ROM is not designed for easy deletion/rewriting.

🧠 Solution Blueprint

Analysis:
- Statement 1: SRAM is static and faster than dynamic DRAM.
- Statement 2: ROM is 'Read Only'; it cannot store data permanently in the sense of a writable drive, nor can it be 'deleted' easily like a hard disk.
- Statement 3: Correct definition of EEPROM.

Free Forever

Track Your Progress

You're Doing Great! 🎯

Unlimited PYQs Progress Tracking Mock Tests

✨ Free forever • No credit card • 2 sec signup with Google

Full Mock Tests

Take Full-Length Mock Tests

Test your complete preparation with timed mock tests. Get detailed analytics and compare scores with other aspirants.

Explore Test Series

All Chapters

Advance Computer Science

Fundamentals of Computer

513+ questions

Current 2

Word Processing (MS Word)

457+ questions

Spreadsheet Software (MS Excel)

147+ questions

Presentation Software (MS PowerPoint)

162+ questions

DBMS Software (MS Access)

224+ questions

C and C++ Programming

Artificial Intelligence and Machine Learning

175+ questions

Python Programming

92+ questions

Blockchain Technology

83+ questions

Principles of Programming and OOPs

630+ questions

Data Structures and Algorithms

288+ questions

Computer Organization and Operating System

302+ questions

Communication and Network Concepts

627+ questions

Network Security

97+ questions

Database Management System

223+ questions

System Analysis and Design

226+ questions

Internet of Things and its Application

318+ questions

Major Developments in IT

103+ questions

Pedagogy of Computer Science

119+ questions

Digital Logic Systems

268+ questions