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.31 In the OSI model, which layer converts data into bits for transmission?
A Physical layer
B Data link layer
C Network layer
D Transport layer
Discuss / Board
Q.32 What is the main difference between a hub and a switch?
A A switch sends frames only to the specific destination port; a hub broadcasts to all ports
B A hub is faster than a switch
C A switch operates at Layer 1, hub at Layer 2
D There is no difference
Discuss / Board
Q.33 Which cloud deployment model is shared among organizations with common concerns?
A Community cloud
B Private cloud
C Public cloud
D Hybrid cloud
Discuss / Board
Q.34 What does the 'ping' command primarily use to test connectivity?
A ICMP Echo Request and Echo Reply
B TCP SYN packets
C UDP datagrams
D ARP requests
Discuss / Board
Q.35 In MS Word, which keyboard shortcut opens the 'Font' dialog?
A Ctrl + D
B Ctrl + Shift + F
C Ctrl + Shift + P
D Both A and B
Discuss / Board
Q.36 In Excel, what is the function of the 'Ctrl + Shift + F3' shortcut?
A Create names from the selected range
B Open the Format Cells dialog
C Insert a function
D Apply auto filter
Discuss / Board
Q.37 Which of the following is a network attached storage device?
A NAS
B DAS
C SAN
D External HDD via USB
Discuss / Board
Q.38 In cybersecurity, what is a 'backdoor'?
A A hidden method of bypassing normal authentication to access a system
B A type of firewall
C A physical security door
D An encryption algorithm
Discuss / Board
Q.39 Which protocol is used to assign IP addresses automatically and renew leases?
A DHCP
B DNS
C NAT
D ARP
Discuss / Board
Q.40 In MS Word, what is the maximum font size that can be typed directly in the size box?
A 1638 pt
B 72 pt
C 999 pt
D Unlimited
Discuss / Board
Q.41 In Excel, which type of chart is a combination of a line and a column chart?
A Combo chart
B Stock chart
C Radar chart
D Bubble chart
Discuss / Board
Q.42 Which component of a computer system houses the BIOS battery?
A Motherboard
B CPU
C Power supply
D Hard drive
Discuss / Board
Q.43 What is the purpose of 'Safe Mode' in Windows?
A Starts Windows with a minimal set of drivers and services for troubleshooting
B Deletes all viruses automatically
C Encrypts the hard drive
D Resets the password
Discuss / Board
Q.44 In networking, what does 'SSID' stand for?
A Service Set Identifier – the name of a Wi-Fi network
B Secure System ID
C Simple Signal Interface
D System Security Identifier
Discuss / Board
Q.45 Which Excel function returns the number of cells in a range that contain numbers?
A COUNT
B COUNTA
C COUNTBLANK
D COUNTIF
Discuss / Board
Q.46 In MS Word, how do you mark an index entry?
A Select text > References tab > Mark Entry
B Insert > Bookmark
C Review > New Comment
D Design > Watermark
Discuss / Board
Q.47 Which of the following is an example of an optical disc format that is rewriteable?
A DVD-RW
B DVD-ROM
C CD-R
D BD-R
Discuss / Board
Q.48 In a computer, what does the term 'form factor' describe?
A The physical size and layout of a hardware component or case
B The speed of the processor
C The amount of RAM
D The type of file system
Discuss / Board
Q.49 In Linux, what is the purpose of the 'sudo' command?
A Execute a command with superuser privileges
B Create a new user
C Mount a file system
D Synchronize the clock
Discuss / Board
Q.50 What does the 'F5' key do in most web browsers?
A Refresh the current page
B Open a new tab
C Close the browser
D Open the Find bar
Discuss / Board
Q.51 In Excel, what is the keyboard shortcut to open the 'Go To' dialog?
A Ctrl + G
B F5
C Ctrl + H
D Both A and B
Discuss / Board
Q.52 Which cyber attack involves flooding a network with ICMP echo requests?
A Ping flood (DDoS)
B Phishing
C SQL injection
D Man-in-the-middle
Discuss / Board
Q.53 What does the 'Ctrl + Alt + Delete' sequence provide access to in Windows?
A Security screen with lock, switch user, task manager options
B Directly opens Task Manager
C Restarts the computer
D Opens the BIOS setup
Discuss / Board
Q.54 In MS Word, what is the function of the 'Ctrl + Alt + M' shortcut?
A Inserts a new comment
B Opens the Mail Merge wizard
C Inserts a footnote
D Switches to Read Mode
Discuss / Board
Q.55 In Excel, what does the formula =CHAR(65) return?
A A
B 65
C Error
D Blank
Discuss / Board
Q.56 Which type of memory module is used in high-end desktops and servers with error correction?
A ECC RAM
B Non-ECC RAM
C Virtual memory
D Cache
Discuss / Board
Q.57 What is the purpose of a 'GPU' in a gaming computer?
A Renders graphics and video output
B Manages network connections
C Stores game files
D Processes sound
Discuss / Board
Q.58 In MS Word, how can you insert a Euro symbol (€)?
A Ctrl + Alt + E
B Alt + 0128 (numeric keypad)
C Insert > Symbol
D All of the above
Discuss / Board
Q.59 Which Excel feature allows you to simulate different input values and see corresponding results in a table?
A Data Table (What-If Analysis)
B Goal Seek
C Solver
D Scenario Manager
Discuss / Board
Q.60 In the context of databases, what does 'SQL' stand for?
A Structured Query Language
B Simple Query Language
C Sequential Query Language
D Standard Query Logic
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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