Computer MCQs for all JKSSB Exams and various others

In the digital era, computer knowledge is required to appear for all competitive exams – whether it be JKSSB or Jammu and Kashmir Police Sub-Inspector exams. Success calls for the grasp of basic fundamentals, software, hardware, networking, and some basic programming. The blog shall contain 50 rigorously filtered out Multiple Choice Questions from moderate to challenging difficulty, particularly designed to meet the exam criteria of the JKSSB JKPSI. Whether you’re preparing for the exam or looking to strengthen your computer science knowledge, these MCQs will help you test your understanding and enhance your problem-solving skills in this vital subject.

MCQs of Computer

Which of the following is the fastest type of memory in a computer system?
- A) Cache Memory
- B) RAM
- C) Hard Disk
- D) Optical Disk
- Answer: A) Cache Memory
What does the term ‘BIOS’ stand for in computing?
- A) Binary Input Output System
- B) Basic Input Output System
- C) Basic Integrated Operating System
- D) Binary Integrated Operating System
- Answer: B) Basic Input Output System
In a computer, what does the ALU (Arithmetic Logic Unit) perform?
- A) Control the movement of data
- B) Perform arithmetic and logic operations
- C) Manage the storage of data
- D) All of the above
- Answer: B) Perform arithmetic and logic operations
Which of the following is NOT an example of an input device?
- A) Keyboard
- B) Mouse
- C) Monitor
- D) Scanner
- Answer: C) Monitor
The main function of an operating system is to:
- A) Control and coordinate computer hardware
- B) Provide a user interface
- C) Manage files and directories
- D) All of the above
- Answer: D) All of the above
Which of the following is a valid IP address?
- A) 256.255.255.0
- B) 192.168.1.256
- C) 10.0.0.1
- D) 172.300.1.1
- Answer: C) 10.0.0.1
Which programming language is primarily used for web development?
- A) C++
- B) Python
- C) JavaScript
- D) Java
- Answer: C) JavaScript
Which of the following is a popular open-source operating system?
- A) Windows 10
- B) Linux
- C) macOS
- D) iOS
- Answer: B) Linux
What does the acronym ‘URL’ stand for in web technology?
- A) Uniform Resource Locator
- B) Uniform Resource Link
- C) Universal Resource Locator
- D) Uniform Retrieval Locator
- Answer: A) Uniform Resource Locator
Which of the following is an example of a cloud storage service?
- A) Google Drive
- B) Microsoft Word
- C) Windows 10
- D) Excel
- Answer: A) Google Drive
What is the purpose of the ‘DNS’ (Domain Name System)?
- A) Convert IP addresses to domain names
- B) Encrypt websites for secure communication
- C) Transfer files over the network
- D) None of the above
- Answer: A) Convert IP addresses to domain names
What does the term ‘HTTP’ stand for?
- A) HyperText Transfer Protocol
- B) HyperText Technical Protocol
- C) Hyper Transfer Text Protocol
- D) Hyperlink Transfer Protocol
- Answer: A) HyperText Transfer Protocol
Which of the following is a volatile memory?
- A) Hard Disk
- B) Flash Drive
- C) RAM
- D) ROM
- Answer: C) RAM
Which of the following is the primary function of the CPU in a computer system?
- A) Store data
- B) Perform calculations and execute instructions
- C) Manage input/output operations
- D) Control the network traffic
- Answer: B) Perform calculations and execute instructions
Which of the following is a type of database management system (DBMS)?
- A) Oracle
- B) MySQL
- C) SQL Server
- D) All of the above
- Answer: D) All of the above
In the context of databases, what does SQL stand for?
- A) Standard Query Language
- B) Structured Query Language
- C) Simple Query Language
- D) Structured Quality Language
- Answer: B) Structured Query Language
Which of the following is NOT an example of an operating system?
- A) Windows 7
- B) Ubuntu
- C) Android
- D) Adobe Photoshop
- Answer: D) Adobe Photoshop
What is the primary function of a router in a network?
- A) To connect devices to the internet
- B) To store data
- C) To execute programs
- D) To perform calculations
- Answer: A) To connect devices to the internet
Which of the following is a file system used by Windows operating systems?
- A) FAT32
- B) NTFS
- C) HFS
- D) Both A and B
- Answer: D) Both A and B
Which of the following is the correct order of memory hierarchy in a computer system?
- A) Cache, RAM, Hard Disk
- B) RAM, Cache, Hard Disk
- C) Hard Disk, RAM, Cache
- D) Cache, Hard Disk, RAM
- Answer: A) Cache, RAM, Hard Disk
Which of the following is NOT a feature of object-oriented programming (OOP)?
- A) Inheritance
- B) Polymorphism
- C) Encapsulation
- D) Parallel Processing
- Answer: D) Parallel Processing
What does the acronym ‘USB’ stand for?
- A) Universal Serial Bus
- B) Universal Storage Bus
- C) Uniform Serial Bus
- D) Universal System Bus
- Answer: A) Universal Serial Bus
Which of the following is used to execute Java programs?
- A) Java Virtual Machine (JVM)
- B) Java Runtime Environment (JRE)
- C) Java Development Kit (JDK)
- D) All of the above
- Answer: D) All of the above
Which of the following is NOT a type of loop in programming?
- A) for loop
- B) while loop
- C) do-while loop
- D) whenever loop
- Answer: D) whenever loop
Which of the following is true about the ‘Cloud Computing’ paradigm?
- A) Cloud computing is the delivery of computing services over the internet
- B) Cloud computing is the use of personal computers for data storage
- C) Cloud computing involves the use of local servers only
- D) Cloud computing is a type of data storage device
- Answer: A) Cloud computing is the delivery of computing services over the internet
Which of the following is a type of malware designed to damage or disrupt a computer system?
- A) Trojan Horse
- B) Spyware
- C) Ransomware
- D) All of the above
- Answer: D) All of the above
Which of the following is a feature of a spreadsheet software?
- A) Word processing
- B) Data analysis
- C) File compression
- D) Image editing
- Answer: B) Data analysis
Which of the following is the primary language for web page development?
- A) HTML
- B) CSS
- C) JavaScript
- D) PHP
- Answer: A) HTML
Which of the following is an example of a relational database management system (RDBMS)?
- A) MongoDB
- B) MySQL
- C) Firebase
- D) Cassandra
- Answer: B) MySQL
Which of the following is NOT a programming paradigm?
- A) Procedural Programming
- B) Object-Oriented Programming
- C) Functional Programming
- D) Binary Programming
- Answer: D) Binary Programming
What is the function of an operating system’s ‘kernel’?
- A) Manages hardware resources
- B) Provides a user interface
- C) Manages network connections
- D) Handles input/output devices
- Answer: A) Manages hardware resources
Which of the following technologies is used to prevent unauthorized access to computer systems?
- A) Firewall
- B) Antivirus
- C) VPN
- D) All of the above
- Answer: D) All of the above
Which of the following is the default file extension for Microsoft Word documents?
- A) .xls
- B) .ppt
- C) .docx
- D) .txt
- Answer: C) .docx
In networking, what is the full form of VPN?
- A) Virtual Private Network
- B) Virtual Public Network
- C) Variable Public Network
- D) Virtual Processor Network
- Answer: A) Virtual Private Network
Which of the following is NOT part of the OSI (Open Systems Interconnection) model?
- A) Network Layer
- B) Transport Layer
- C) Data Link Layer
- D) Application Layer
- Answer: D) Application Layer
Which of the following is used to store long-term data in a computer system?
- A) RAM
- B) Hard Drive
- C) Cache Memory
- D) ROM
- Answer: B) Hard Drive
Which of the following is the main component responsible for the logical decision-making process in a computer?
- A) RAM
- B) CPU
- C) Disk Drive
- D) Power Supply
- Answer: B) CPU
What does RAID stand for in the context of computer storage?
- A) Random Array of Independent Disks
- B) Redundant Array of Independent Disks
- C) Redundant Array of Internal Disks
- D) Random Array of Internal Disks
- Answer: B) Redundant Array of Independent Disks
Which of the following is an example of a primary storage device?
- A) Hard Disk
- B) ROM
- C) Optical Disk
- D) Flash Drive
- Answer: B) ROM
What does ‘GUI’ stand for in the context of computer interfaces?
- A) General User Interface
- B) Graphic User Interface
- C) Graphic Universal Interface
- D) General User Integration
- Answer: B) Graphic User Interface
Which of the following is used for wireless communication in computer networks?
- A) LAN Cable
- B) Fiber Optic Cable
- C) Bluetooth
- D) Ethernet
- Answer: C) Bluetooth
Which of the following programming languages is known for its role in artificial intelligence (AI) development?
- A) C++
- B) JavaScript
- C) Python
- D) Java
- Answer: C) Python
What is the primary purpose of an ‘IP Address’?
- A) To identify the type of software used by the computer
- B) To provide physical location of the device
- C) To uniquely identify a device on a network
- D) To store the web browser history
- Answer: C) To uniquely identify a device on a network
Which of the following is used to create web pages?
- A) JavaScript
- B) CSS
- C) HTML
- D) All of the above
- Answer: D) All of the above
Which of the following is NOT a function of the operating system?
- A) Memory management
- B) File management
- C) Network management
- D) Software programming
- Answer: D) Software programming
Which is a high-level programming language designed for system programming?
- A) Python
- B) C
- C) JavaScript
- D) Assembly Language
- Answer: B) C
Which of the following is a common function of an antivirus software?
- A) To increase computer speed
- B) To block internet access
- C) To detect and remove malware
- D) To store data in the cloud
- Answer: C) To detect and remove malware
What is the purpose of the ‘Ctrl + Z’ keyboard shortcut?
- A) To open a new window
- B) To close the application
- C) To undo the last action
- D) To redo the last action
- Answer: C) To undo the last action
Which device converts digital data to analog signals?
- A) Modem
- B) Router
- C) Switch
- D) Hub
- Answer: A) Modem
Which of the following is the most secure type of password encryption?
- A) MD5
- B) SHA-256
- C) AES
- D) RSA
- Answer: C) AES

These questions cover a variety of topics in computer science and should be useful for preparing for the JKSSB JKPSI exam.

Also Read This: MCQs on Jammu and Kashmir Reorganisation Act, 2019

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