Computer set 3 MCQs

Practice interactive objective questions for this topic. Select an option to instantly verify your answer and read detailed explanations.

Showing 470 questions
Q.1 In CPU architecture, what is the purpose of the Instruction Queue?
A Prefetches instructions to keep the pipeline filled and reduce waiting time
B Stores the results of ALU operations
C Holds the address of the next memory location
D Decodes the fetched instruction
Discuss / Board
Q.2 Which type of memory module has 240 pins and is commonly used in older desktop computers?
A DDR3 DIMM
B DDR2 DIMM
C DDR4 DIMM
D SO-DIMM
Discuss / Board
Q.3 In the context of digital electronics, what is a flip-flop?
A A bistable circuit that stores one bit of data
B A type of logic gate
C A clock signal generator
D An amplifier circuit
Discuss / Board
Q.4 Which operating system feature allows a single CPU to run multiple threads apparently simultaneously?
A Multithreading
B Multitasking
C Multiprocessing
D Time-sharing
Discuss / Board
Q.5 In the boot process, what is the role of the Master Boot Record (MBR)?
A Contains the bootloader and partition table information to start loading the OS
B Stores the OS kernel
C Holds the system registry
D Initializes the CPU cache
Discuss / Board
Q.6 What is a distinguishing feature of EEPROM compared to EPROM?
A It can be erased and reprogrammed electrically without UV light
B It is volatile
C It has faster read speeds than SRAM
D It is used only in graphics cards
Discuss / Board
Q.7 In binary arithmetic, what is the result of 1011 + 1001?
A 10100
B 1100
C 10000
D 1110
Discuss / Board
Q.8 Which generation of computers primarily used transistors as their main electronic component?
A Second generation
B First generation
C Third generation
D Fourth generation
Discuss / Board
Q.9 Which type of computer is specifically designed to handle high-volume transaction processing for banks?
A Mainframe
B Supercomputer
C Workstation
D Personal computer
Discuss / Board
Q.10 What is the primary function of a thermal paste applied between a CPU and its heat sink?
A To fill microscopic gaps and improve heat transfer
B To glue the CPU in place
C To insulate electrical connections
D To prevent dust accumulation
Discuss / Board
Q.11 Which connector type is commonly used for transmitting digital video from a computer to a monitor?
A DisplayPort
B USB Type-A
C RJ-45
D 3.5mm audio jack
Discuss / Board
Q.12 Which type of software is responsible for controlling and allocating memory to running applications?
A Operating system
B Device driver
C Compiler
D Firmware
Discuss / Board
Q.13 In programming, what does a linker do?
A Combines object files and resolves references to create an executable
B Translates high-level code to assembly
C Converts assembly to machine code
D Interprets code line by line
Discuss / Board
Q.14 When a computer fails to boot and emits a series of beeps, what component is likely providing error codes?
A BIOS/UEFI via POST
B Operating system
C Hard drive controller
D Power supply fan
Discuss / Board
Q.15 Which input device uses a grid of infrared LEDs and photodetectors to detect touch?
A Infrared touch screen
B Capacitive touch screen
C Resistive touch screen
D Surface acoustic wave touch screen
Discuss / Board
Q.16 Which printing technology uses a piezoelectric crystal to eject ink droplets?
A Inkjet printer (piezo technology)
B Laser printer
C Thermal inkjet
D Dot matrix printer
Discuss / Board
Q.17 In MS Word, which field code displays the total number of pages in the document?
A NUMPAGES
B PAGE
C SECTIONPAGES
D PAGEREF
Discuss / Board
Q.18 In Excel, what does the function =TEXT(1234.56,"$#,##0.00") return?
A $1,234.56
B 1234.56
C $1234.56
D $1,234.6
Discuss / Board
Q.19 What is the purpose of Excel's 'Camera' tool?
A Creates a live snapshot of a range that updates dynamically
B Captures a screenshot of the desktop
C Records a macro
D Imports pictures from a camera
Discuss / Board
Q.20 Which type of computer security threat is a 'logic bomb'?
A Malicious code that triggers when specific conditions are met
B A virus that spreads via email
C A denial-of-service attack
D A password cracker
Discuss / Board
Q.21 What does 'IMAP' allow that 'POP3' does not?
A Access and manage emails directly on the server without downloading
B Send encrypted emails
C Faster email deletion
D Support for HTML only
Discuss / Board
Q.22 In a URL, what does the 'path' component specify?
A The specific location of a resource on the web server
B The protocol used
C The domain name
D The port number
Discuss / Board
Q.23 Which search engine operator finds pages containing either of two terms?
A OR (or |)
B AND
C NOT
D EXACT
Discuss / Board
Q.24 In data storage, what is the typical size of a sector on a standard HDD?
A 512 bytes
B 1024 bytes
C 4096 bytes
D Both A and C (512e or 4Kn)
Discuss / Board
Q.25 Which Windows utility can create a bootable USB drive?
A Rufus or Media Creation Tool
B Task Scheduler
C Notepad
D Paint
Discuss / Board
Q.26 In Linux, what does the 'dmesg' command display?
A Kernel ring buffer messages, often used to diagnose hardware issues
B Disk usage statistics
C Current memory usage
D User login history
Discuss / Board
Q.27 Which cryptographic concept ensures that a message has not been altered?
A Integrity (via hash/MAC)
B Confidentiality
C Authentication
D Non-repudiation
Discuss / Board
Q.28 What is the purpose of a 'CAPTCHA'?
A Differentiate human users from automated bots
B Encrypt data transmissions
C Manage network traffic
D Scan for viruses
Discuss / Board
Q.29 In Excel, what does the 'Ctrl + Shift + @' shortcut apply?
A Time format (e.g., 1:30 PM)
B Date format
C Scientific format
D Percentage format
Discuss / Board
Q.30 In MS Word, what is the purpose of 'Section Break (Next Page)'?
A Starts a new section on the next page, allowing independent page formatting
B Inserts a page break only
C Starts a new column
D Begins a new paragraph
Discuss / Board

Master Computer set 3 for All Competitive Exams 2026

Practicing Computer set 3 MCQs is one of the most effective ways to prepare for competitive examinations in 2026. This topic-wise question bank contains carefully selected multiple-choice questions designed to strengthen conceptual understanding, improve accuracy, and enhance problem-solving speed. Our collection includes beginner, intermediate, and advanced-level questions frequently asked in JKSSB, SSC, Banking, Railway, Police, Defence, State PSC, and various national-level examinations. Every question is structured to reflect real exam patterns and helps candidates become familiar with objective-type assessment formats. Instant answer verification enables students to identify mistakes immediately and learn the correct approach without wasting valuable preparation time. Regular practice of topic-wise MCQs improves retention, reinforces key concepts, and develops confidence required to perform well under exam pressure. Whether you are revising important concepts, preparing for an upcoming recruitment test, or strengthening weak areas, these practice questions provide a reliable platform for continuous improvement. Consistent participation in MCQ-based learning sessions can significantly increase your chances of achieving higher scores and better ranks in competitive examinations.

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