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Question 1. What is the primary function of the CPU in a computer system? A) To store data permanently B) To execute instructions and process data C) To display graphics on the monitor D) To connect peripherals to the system Answer: B Explanation: The CPU (Central Processing Unit) is responsible for executing instructions and processing data, acting as the brain of the computer. Question 2. Which component provides temporary storage that the CPU uses to hold data and instructions during processing? A) Hard Drive B) RAM (Random Access Memory) C) Solid State Drive D) Power Supply Unit Answer: B Explanation: RAM provides temporary, fast-access storage for data and instructions that the CPU needs during processing, improving system performance.
Question 3. What distinguishes primary storage from secondary storage? A) Primary storage is volatile; secondary storage is non-volatile B) Primary storage is slower than secondary storage C) Primary storage is only used for operating system files D) Secondary storage cannot be accessed directly by the CPU Answer: A Explanation: Primary storage (like RAM) is volatile and temporary, while secondary storage (like HDDs and SSDs) is non-volatile and used for permanent data storage. Question 4. Which of the following is an example of an operating system? A) Microsoft Word B) Windows 10 C) Google Chrome D) Adobe Photoshop Answer: B Explanation: Windows 10 is an example of an operating system, managing hardware and software resources for the user.
Question 7. Which is an example of a secondary storage device? A) RAM B) Hard Disk Drive (HDD) C) Cache memory D) CPU cache Answer: B Explanation: HDDs are secondary storage devices used for long-term data storage, unlike RAM which is primary and volatile. Question 8. Which component is crucial for cooling hardware components like the CPU? A) Power supply B) Heat sink and fan C) Network card D) Hard drive Answer: B Explanation: Heat sinks and fans dissipate heat generated by hardware components such as the CPU, preventing overheating and ensuring optimal performance.
Question 9. Which peripheral device is used to input data into a computer? A) Monitor B) Keyboard C) Printer D) Speakers Answer: B Explanation: A keyboard is an input device used to enter data and commands into a computer system. Question 10. What is the main function of BIOS/UEFI firmware in a computer? A) To control the graphical display B) To initialize hardware during startup and load the operating system C) To manage network connections D) To store user data permanently Answer: B Explanation: BIOS (Basic Input Output System) or UEFI (Unified Extensible Firmware Interface) initializes hardware components during boot and loads the OS.
Question 13. Which process management technique involves dividing memory into parts to run multiple processes efficiently? A) Virtual memory B) Paging and segmentation C) Disk partitioning D) File compression Answer: B Explanation: Paging and segmentation are techniques that divide memory into parts to allow multiple processes to run efficiently and securely. Question 14. What is the primary purpose of user permissions in an operating system? A) To improve system speed B) To control access to files and resources C) To manage network connections D) To prevent hardware failures Answer: B Explanation: User permissions restrict and control access to files, directories, and resources, ensuring security and proper usage.
Question 15. Which utility is used to create, delete, or modify disk partitions in Windows? A) Disk Cleanup B) Disk Management C) Task Manager D) System Restore Answer: B Explanation: Disk Management utility allows users to partition, format, and manage disk drives effectively. Question 16. Which command-line tool in Linux can be used to list all active processes? A) ls B) ps C) cd D) mkdir Answer: B Explanation: The 'ps' command lists all active processes running on a Linux system, useful for process management.
Question 19. Which layer of the OSI model is responsible for routing and switching? A) Physical Layer B) Data Link Layer C) Network Layer D) Transport Layer Answer: C Explanation: The Network layer manages routing, addressing, and switching of data packets across different networks. Question 20. Which IP addressing scheme is designed to provide a vast number of addresses for modern networks? A) IPv B) IPv C) MAC addresses D) URL addresses Answer: B Explanation: IPv6 provides a vastly larger address space than IPv4, designed to meet the needs of the growing number of internet-connected devices.
Question 21. What is the primary purpose of a firewall in network security? A) To speed up data transfer B) To block unauthorized access and protect the network C) To connect to the internet D) To store backup data Answer: B Explanation: Firewalls monitor and control incoming and outgoing network traffic based on security rules, blocking unauthorized access. Question 22. Which encryption method uses a pair of keys—public and private—for secure communication? A) Symmetric encryption B) Asymmetric encryption C) Hashing D) XOR encryption Answer: B Explanation: Asymmetric encryption employs a public key for encryption and a private key for decryption, enabling secure exchanges.
Question 25. Which language is primarily used in web development for server-side scripting? A) C++ B) JavaScript C) PHP D) Java Answer: C Explanation: PHP is a popular server-side scripting language used to develop dynamic websites and web applications. Question 26. Which version control system is widely used for tracking changes in source code? A) SVN B) Git C) Mercurial D) CVS Answer: B Explanation: Git is a distributed version control system that tracks changes, enables collaboration, and manages code history efficiently.
Question 27. What does a relational database primarily organize data into? A) Documents B) Graphs C) Tables with rows and columns D) Key-Value pairs Answer: C Explanation: Relational databases store data in tables consisting of rows and columns, enabling structured querying and relationships. Question 28. Which SQL command is used to retrieve data from a database? A) INSERT B) UPDATE C) SELECT D) DELETE Answer: C Explanation: The SELECT statement retrieves data from database tables based on specified criteria. Question 29. What is a primary benefit of database normalization? A) To increase data redundancy
C) VMware vSphere/ESXi D) Docker Answer: C Explanation: VMware's vSphere/ESXi is a widely used enterprise virtualization platform for creating and managing virtual machines. Question 32. What is the primary advantage of using containerization tools like Docker? A) Hardware virtualization B) Lightweight, portable, and consistent environments for applications C) Managing physical servers D) Creating virtual networks only Answer: B Explanation: Docker containers provide lightweight, portable, and consistent environments, simplifying deployment and scalability. Question 33. Which cloud deployment model involves hosting services on private infrastructure within an organization? A) Public Cloud B) Private Cloud
C) Hybrid Cloud D) Community Cloud Answer: B Explanation: Private clouds are dedicated to a single organization, offering greater control and security over data and resources. Question 34. Which web development technology is primarily responsible for creating dynamic and interactive front-end interfaces? A) HTML B) CSS C) JavaScript D) PHP Answer: C Explanation: JavaScript enables the creation of dynamic, interactive elements on web pages, enhancing user experience. Question 35. Which web server software is known for high performance and scalability, often used with Linux? A) Apache B) IIS
D) To authenticate users only Answer: B Explanation: HTTPS encrypts data exchanged between the client and server, ensuring confidentiality and integrity. Question 38. Which emerging technology involves creating digital replicas of physical objects or environments? A) Blockchain B) Virtual Reality (VR) C) 3D Printing D) Augmented Reality (AR) Answer: B Explanation: VR creates immersive digital environments that replicate real or imagined worlds for various applications. Question 39. Which field of AI focuses on enabling machines to learn from data without being explicitly programmed? A) Expert Systems B) Machine Learning C) Rule-Based Systems
D) Knowledge Engineering Answer: B Explanation: Machine learning allows systems to learn patterns from data and improve performance over time. Question 40. What is the main benefit of edge computing? A) Centralized data processing in the cloud B) Processing data closer to the source to reduce latency C) Complete reliance on local servers D) Eliminating the need for data storage Answer: B Explanation: Edge computing processes data near the source (e.g., IoT devices), reducing latency and bandwidth usage. Question 41. Which quantum phenomenon is fundamental to quantum computing? A) Superposition B) Binary states C) Classical bits D) Transistors
