Job seekers often find themselves in need of brushing up on their computer knowledge. Many job interviews include questions on basic computer concepts and terminology. This can be stressful for those who haven’t used a computer in a while or who are not familiar with the latest technology.
To help job seekers prepare for such interviews, we have compiled a list of the top 65 computer general knowledge questions. This quiz format allows you to test your knowledge and learn new concepts. The answers are provided for each question, so you can understand the reasoning behind them.
Computer GK Questions: Basic Terminologies
1) What does CPU stand for?
CPU stands for Central Processing Unit, the main component that executes instructions and controls the computer’s operations.
2) What are the main types of operating systems?
The main types of operating systems include batch, multiprogramming, multi-tasking, time-sharing, real-time, distributed, and network operating systems.
3) Define software and hardware.
Software refers to programs and data that provide instructions to the computer, while hardware consists of the physical components of a computer.
4) What is RAM and what is its function?
RAM (Random Access Memory) is a type of volatile memory that provides temporary storage for data and instructions accessed by the CPU.
5) Explain the difference between a file and a folder.
A file is a collection of data stored on a storage device. A folder (or directory) is a container that holds files and other folders in a hierarchical structure.
6) What is the purpose of an operating system?
The main purposes of an operating system are to manage system resources, provide a user interface, and act as an intermediary between software and hardware.
7) What is the difference between a bit and a byte?
A bit is the smallest unit of data, representing a single binary value (0 or 1), while a byte is a sequence of 8 bits used to represent a single character.
8) What is a computer virus, and how does it spread?
A computer virus is a type of malware that can replicate itself and infect other programs or files. Viruses can spread through infected files, email attachments, downloads, and network connections.
9) What is the function of a motherboard?
The motherboard is the main circuit board that connects all the components of a computer, allowing them to communicate with each other.
10) What is the difference between RAM and ROM?
RAM (Random Access Memory) is a volatile memory that allows for reading and writing data. ROM (Read-Only Memory) is a non-volatile memory that can only be read and is used to store permanent instructions for the computer.
11) What is a computer network, and what are its benefits?
A computer network is a group of interconnected devices that can communicate and share resources. Benefits include resource sharing, improved communication, centralised data storage, and increased efficiency.
12) What is the purpose of a web browser?
A web browser is a software application used to access and display web pages on the internet. Its main purpose is to retrieve, present, and navigate information from the World Wide Web.
13) What is the difference between a server and a client?
In a client-server network, a server is a computer or device that provides resources and services to other computers (clients), while a client is a computer or device that requests and uses those resources and services.
14) What is the function of a power supply unit (PSU)?
The power supply unit is responsible for converting alternating current (AC) from a wall outlet to low-voltage direct current (DC) that can be used by the computer’s components.
15) What is the purpose of a firewall?
A firewall is a security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. Its main purpose is to protect a computer or network from unauthorised access or malicious activities.
Computer GK Questions: Hardware Related
16) Name the main components of a computer.
The main components of a computer include the CPU, motherboard, RAM, storage devices (e.g., hard disk, SSD), power supply, and input/output devices.
17) What are the different types of storage devices?
Common storage devices include hard disk drives (HDDs), solid-state drives (SSDs), USB flash drives, optical discs (CD, DVD, Blu-ray), and memory cards.
18) What is the function of a graphics processing unit (GPU)?
The graphics processing unit is responsible for rendering images, animations, and video in a computer. It is particularly useful for tasks such as gaming, video editing, and scientific simulations.
19) Explain the difference between a printer and a scanner.
A printer is an output device that produces a physical copy of digital information on paper. A scanner is an input device that converts physical documents into digital form.
20) What are the common types of computer ports?
Common computer ports include USB, HDMI, VGA, Ethernet, audio jacks, and serial ports, used for connecting various devices and peripherals.
21) What is the purpose of a sound card?
A sound card is an expansion card or integrated circuit that provides audio input and output capabilities to a computer. It enables the computer to produce sound and record audio.
22) What is the difference between a laptop and a desktop computer?
A laptop (or notebook) is a portable, all-in-one computer designed for mobility. A desktop computer is a stationary system typically found in homes and offices.
23) What is the function of a network interface card (NIC)?
A network interface card is a hardware component that connects a computer to a network. It enables the computer to communicate with other devices on the network and access network resources.
24) What is the purpose of a cooling system in a computer?
The cooling system, typically consisting of fans and heatsinks, is responsible for dissipating heat generated by the computer’s components, particularly the CPU and GPU. This helps maintain optimal operating temperatures and prevents overheating.
25) What is the difference between a serial port and a parallel port?
A serial port transmits data one bit at a time, while a parallel port transmits multiple bits simultaneously. Serial ports are commonly used for connecting devices like mice and modems, while parallel ports are used for connecting printers and scanners.
Computer GK Questions: Software Related
26) What are the main types of software?
The main types of software include system software (e.g., operating systems), application software (e.g., word processors, spreadsheets), programming software (e.g., compilers, debuggers), and driver software.
27) Name some common word processing, spreadsheet, and presentation software.
Popular word processing software includes Microsoft Word, Google Docs, and LibreOffice Writer. Spreadsheet software examples are Microsoft Excel, Google Sheets, and LibreOffice Calc. Presentation software includes Microsoft PowerPoint, Google Slides, and LibreOffice Impress.
28) What is an antivirus program and why is it important?
An antivirus program is a security software that detects, prevents, and removes malware (e.g., viruses, worms, Trojans) from infecting a computer system. It is essential for protecting against cyber threats and maintaining system integrity.
29) What are the benefits of using cloud storage?
Cloud storage allows users to store and access data remotely over the internet, offering benefits such as accessibility from any device, automatic backups, scalability, and reduced hardware costs.
30) What is the difference between open-source and proprietary software?
Open-source software has its source code publicly available and can be modified and distributed freely, while proprietary software is owned by a company or individual, and its source code is not publicly accessible.
31) What is the purpose of a database management system (DBMS)?
A database management system is software designed to create, manage, and maintain databases. It provides a structured way to store, organise, and retrieve data efficiently.
32) What is the difference between a compiler and an interpreter?
A compiler translates high-level programming languages into machine-readable code all at once, while an interpreter translates and executes the code line by line. Compiled programs generally run faster, while interpreted programs are more flexible and easier to debug.
33) What is the purpose of a device driver?
A device driver is a software component that enables the operating system to communicate with and control a specific hardware device. It acts as an intermediary between the hardware and the operating system.
34) What is the difference between freeware and shareware?
Freeware is software that is free to use and distribute, while shareware is software that is free to try but requires payment for continued use or additional features. Freeware is typically open-source, while shareware is proprietary.
35) What is the purpose of a backup utility?
A backup utility is software designed to create copies of data stored on a computer or network. It helps protect against data loss due to hardware failures, human errors, or malicious attacks.
Computer GK Questions: Internet and Networking Related
36) What is the Internet?
The Internet is a global network of interconnected computer networks that enables the exchange of information and communication between devices worldwide.
37) Explain the terms URL, HTTP, and HTML.
URL (Uniform Resource Locator) is the address of a web resource on the internet. HTTP (Hypertext Transfer Protocol) is the standard protocol for transferring web pages over the internet. HTML (Hypertext Markup Language) is the standard markup language used to create and structure web pages.
38) What is a browser? Name some popular browsers.
A browser is a software application used to access and display web pages. Popular browsers include Google Chrome, Mozilla Firefox, Microsoft Edge, Safari, and Opera.
39) What is an email? Explain its basic components.
Email (electronic mail) is a method of exchanging digital messages between users over the internet. The basic components of an email include the sender’s address, recipient’s address, subject line, message body, and attachments.
40) What is the difference between a LAN and a WAN?
A LAN (Local Area Network) is a computer network that interconnects devices within a limited geographical area, such as a home or office. A WAN (Wide Area Network) connects LANs and devices over a larger geographical area, such as across cities or countries.
41) What is the purpose of a router?
A router is a networking device that connects multiple networks and forwards data packets between them. It helps direct traffic and ensures efficient communication between devices on different networks.
42) What is the difference between TCP and UDP?
TCP (Transmission Control Protocol) is a connection-oriented protocol that ensures reliable data transfer. UDP (User Datagram Protocol) is a connectionless protocol that provides faster but less reliable data transfer. TCP is commonly used for web browsing and email, while UDP is used for real-time applications like video streaming and online gaming.
43) What is the purpose of a switch in a network?
A switch is a networking device that connects devices within a LAN and forwards data packets to their destination based on the MAC addresses of the devices. It helps improve network performance by creating separate collision domains.
44) What is the difference between DHCP and DNS?
DHCP (Dynamic Host Configuration Protocol) is used to automatically assign IP addresses to devices on a network. DNS (Domain Name System) translates domain names into IP addresses, allowing devices to communicate using human-readable names instead of numerical addresses.
45) What is the purpose of a VPN (Virtual Private Network)?
A VPN is used to create a secure and encrypted connection between a device and a network over the internet. It helps protect data from eavesdropping and allows users to access restricted content or resources remotely.
Computer GK Questions: Cybersecurity Related
46) What are common types of cyberattacks?
Common types of cyberattacks include malware, phishing, denial-of-service (DoS), SQL injection, and social engineering. These attacks aim to gain unauthorised access, steal data, or disrupt system operations.
47) What are some best practices for creating strong passwords?
Best practices for strong passwords include using a combination of uppercase and lowercase letters, numbers, and symbols, avoiding common words or personal information, using different passwords for different accounts, and regularly updating passwords.
48) Explain the terms phishing and malware.
Phishing is a type of social engineering attack that attempts to trick users into revealing sensitive information or performing actions that compromise security. Malware is any software designed to cause harm or gain unauthorised access to a computer system.
49) How can you protect your personal information online?
Protecting personal information online involves using strong passwords, enabling two-factor authentication, being cautious when sharing information on social media, using secure and reputable websites, and regularly updating software and operating systems.
50) What is the purpose of encryption in cybersecurity?
Encryption is the process of converting data into a coded format that can only be accessed by authorised parties with a decryption key. It helps protect sensitive information from unauthorised access and ensures data confidentiality.
51) What is the difference between symmetric and asymmetric encryption?
Symmetric encryption uses a single shared key for both encryption and decryption. Asymmetric encryption uses a pair of keys: a public key for encryption and a private key for decryption. Symmetric encryption is faster, but asymmetric encryption is more secure for key exchange.
52) What is the purpose of a digital signature?
A digital signature is a mathematical technique used to validate the authenticity and integrity of digital messages or documents. It ensures that the message has not been tampered with and was indeed sent by the claimed sender.
53) What is the difference between a virus and a worm?
A virus is a type of malware that attaches itself to a host file and spreads through user interaction, while a worm is a self-replicating malware that can spread independently across networks without user intervention.
54) What is the purpose of penetration testing in cybersecurity?
Penetration testing, or ethical hacking, is the practice of simulating a cyberattack on a computer system or network to identify vulnerabilities and assess the effectiveness of security measures. It helps organisations strengthen their defences against real-world attacks.
55) What is the difference between a firewall and an antivirus program?
A firewall monitors and controls incoming and outgoing network traffic based on predetermined security rules. An antivirus program detects, prevents, and removes malware from infecting a computer system. They work together to provide comprehensive protection against cyber threats.
Computer GK Questions: Emerging Technologies Related
56) What is artificial intelligence (AI)?
Artificial intelligence (AI) refers to the simulation of human intelligence in machines that are programmed to think and learn like humans, performing tasks such as perception, learning, reasoning, and problem-solving.
57) What are the potential applications of AI in the workplace?
AI has potential applications in the workplace for automating tasks, improving decision-making, enhancing customer service, optimising processes, and generating insights from large datasets.
58) What is cloud computing?
Cloud computing is the delivery of computing services (e.g., servers, storage, databases, software) over the internet, allowing users to access and use these resources on-demand without the need for local hardware.
59) What is the Internet of Things (IoT)?
The Internet of Things (IoT) refers to the network of interconnected devices, vehicles, home appliances, and other objects embedded with sensors, software, and connectivity, enabling them to collect and exchange data.
60) Explain the concept of blockchain technology.
Blockchain is a decentralised, distributed digital ledger that records transactions across many computers in a network. It is known for its security, transparency, and resistance to modification of data.
61) What is the purpose of quantum computing?
Quantum computing aims to harness the principles of quantum mechanics to perform computations that are beyond the capabilities of classical computers. It has the potential to solve complex problems more efficiently in fields like cryptography, drug discovery, and optimization.
62) What is the difference between virtual reality (VR) and augmented reality (AR)?
Virtual reality creates a fully immersive, computer-generated environment that replaces the real world, while augmented reality enhances the user’s perception of the real world by overlaying digital information, such as images, text, or 3D models.
63) What is the purpose of edge computing?
Edge computing is a distributed computing paradigm that brings computation and data storage closer to the devices and locations where it is needed, reducing latency and improving response times for applications that require real-time processing.
64) What is the difference between machine learning and deep learning?
Machine learning is a subset of AI that enables systems to learn and improve from experience without being explicitly programmed, while deep learning is a more advanced technique within machine learning that uses artificial neural networks to process and analyse large amounts of data.
65) What is the purpose of 5G technology?
5G, or fifth-generation wireless technology, is designed to provide faster, more reliable, and more efficient wireless communication compared to previous generations. It offers higher data speeds, lower latency, and increased capacity to support the growing demand for mobile data and the Internet of Things.
You’ve learned the basics. Now, here are some extra tips to help you in your job search.
Additional Tips for the Job Seekers
The job market is competitive. You need every advantage you can get. These additional tips can help you stand out from other applicants.
1) Tailor Your Study
Job requirements vary greatly. Focus your study on areas that are most relevant to the types of jobs you’re applying for. This shows employers that you have the specific skills and knowledge they need.
- Read job descriptions carefully: Identify the key skills and qualifications employers are looking for.
- Research the company and industry: Understand the company’s culture and values, and the current trends in the industry.
- Customise your resume and cover letter: Highlight your most relevant skills and experiences for each job you apply for.
2) Practice
The more you practise, the more confident you’ll be in your skills. Use online quizzes and resources to reinforce your knowledge and test your understanding.
iScalePro: This platform offers a wide range of practice tests and quizzes for different job roles and industries. It’s a great way to assess your strengths and weaknesses and identify areas where you need to improve.
3) Showcase Your Skills
Your computer skills are valuable assets. Briefly mention your computer skills and certifications on your resume and cover letter.
- List specific software programs: Include the names of the programs you’re proficient in, such as Microsoft Office, Adobe Creative Suite, or programming languages like Python or Java.
- Mention certifications: If you have any relevant certifications, such as Microsoft Office Specialist or CompTIA A+, list them on your resume.
Conclusion
These 65 questions and answers are a great start for job seekers. They cover the basics of computer knowledge. You can use this knowledge to understand your work better. You can also use it to talk about computers at work. This knowledge will help you in your job search. It will also help you at work. Learn more about computers every day. This will help you get a good job and do well at work.
Computer GK FAQs
1) What is the basic of computer GK?
Computer GK is knowing about computers and technology. It includes knowing about hardware, software, the internet, and computer history. It’s important for many jobs.
2) What are the top 10 GK questions answers?
- What is a computer? A computer is a machine that can process information.
- What are the main parts of a computer? The main parts are the CPU, RAM, storage, and input/output devices.
- What is the difference between hardware and software? Hardware is the physical parts of a computer, while software is the programs that run on it.
- What is the internet? The internet is a global network of computers that can communicate with each other.
- What is a website? A website is a collection of pages on the internet.
- What is a search engine? A search engine is a program that helps you find information on the internet.
- What is a computer virus? A computer virus is a program that can damage your computer.
- What is a firewall? A firewall is a program that protects your computer from viruses and other threats.
- What is cloud computing? Cloud computing is the use of the internet to access and store data.
- Who invented the computer? Charles Babbage is often considered the father of the computer.
3) What are common computer questions?
- What is the difference between a laptop and a desktop? A laptop is a portable computer, while a desktop is a computer that is not portable.
- What is the difference between a tablet and a smartphone? A tablet is a larger device with a touchscreen, while a smartphone is a smaller device that you can use to make phone calls.
- What is the difference between a mouse and a touchpad? A mouse is a small device that you move around a surface to control the cursor on your screen. A touchpad is a surface that you can touch to control the cursor.
- What is the difference between a printer and a scanner? A printer is a device that can print documents on paper. A scanner is a device that can scan documents and images into your computer.
- What is the difference between a USB drive and a hard drive? A USB drive is a small, portable storage device. A hard drive is a larger storage device that is usually inside your computer.
4) What are the five GK questions?
- What is the operating system of your computer?
- What is the name of your web browser?
- What is the difference between a file and a folder?
- What is the difference between a local area network (LAN) and a wide area network (WAN)?
- What is the difference between a public IP address and a private IP address?
