100 MCQ on Computer Application with answer

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100 MCQ on Computer Application

1. Which of the following is the main function of the CPU?
   • A. Storing data
   • B. Executing instructions
   • C. Input and output
   • D. Networking
   • Answer: B
2. Which of the following is the primary storage device of a computer?
   • A. Hard disk
   • B. RAM
   • C. ROM
   • D. CD-ROM
   • Answer: B
3. Which of the following is an example of an output device?
   • A. Monitor
   • B. Keyboard
   • C. Mouse
   • D. Printer
   • Answer: A
4. Which of the following is an example of an input device?
   • A. Monitor
   • B. Keyboard
   • C. Mouse
   • D. Printer
   • Answer: B
5. Which of the following is an operating system?
   • A. Microsoft Windows
   • B. Linux
   • C. macOS
   • D. All of the above
   • Answer: D
6. Which of the following is a word processing software?
   • A. Microsoft Word
   • B. Google Docs
   • C. LibreOffice Writer
   • D. All of the above
   • Answer: D
7. Which of the following is a spreadsheet software?
   • A. Microsoft Excel
   • B. Google Sheets
   • C. LibreOffice Calc
   • D. All of the above
   • Answer: D
8. Which of the following is a presentation software?
   • A. Microsoft PowerPoint
   • B. Google Slides
   • C. LibreOffice Impress
   • D. All of the above
   • Answer: D
9. Which of the following is a database software?
   • A. Microsoft Access
   • B. MySQL
   • C. Oracle
   • D. All of the above
   • Answer: D
10. Which of the following is a web browser?
    • A. Google Chrome
    • B. Mozilla Firefox
    • C. Microsoft Edge
    • D. All of the above
    • Answer: D
11. What is the full form of RAM?
    • A. Random Access Memory
    • B. Read Only Memory
    • C. Real Time Memory
    • D. Reduced Access Memory
    • Answer: A
12. What is the full form of ROM?
    • A. Read Only Memory
    • B. Random Access Memory
    • C. Real Time Memory
    • D. Reduced Access Memory
    • Answer: A
13. What is the full form of CPU?
    • A. Central Processing Unit
    • B. Central Processing Utility
    • C. Central Processing Unit
    • D. Central Processing Unit
    • Answer: A
14. What is the full form of GUI?
    • A. Graphical User Interface
    • B. Graphical Utility Interface
    • C. Graphical User Inference
    • D. Graphical User Insertion
    • Answer: A
15. What is the full form of OS?
    • A. Operating System
    • B. Operating Scheme
    • C. Operating Structure
    • D. Operating Solution
    • Answer: A
16. What is the full form of LAN?
    • A. Local Area Network
    • B. Local Access Network
    • C. Local Agreement Network
    • D. Local Adaptation Network
    • Answer: A
17. What is the full form of WAN?
    • A. Wide Area Network
    • B. Wide Access Network
    • C. Wide Agreement Network
    • D. Wide Adaptation Network
    • Answer: A
18. What is the full form of WWW?
    • A. World Wide Web
    • B. World Wide Worksheet
    • C. World Wide Wire
    • D. World Wide Word
    • Answer: A
19. What is the full form of HTTP?
    • A. HyperText Transfer Protocol
    • B. HyperText Transfer Procedure
    • C. HyperText Transfer Process
    • D. HyperText Transfer Policy
    • Answer: A
20. What is the full form of HTTPS?
    • A. HyperText Transfer Protocol Secure
    • B. HyperText Transfer Procedure Secure
    • C. HyperText Transfer Process Secure
    • D. HyperText Transfer Policy Secure
    • Answer: A
21. What is the difference between RAM and ROM?
    • A. RAM is volatile memory, while ROM is non-volatile memory.
    • B. RAM is permanent memory, while ROM is temporary memory.
    • C. RAM is used to store data, while ROM is used to store instructions.
    • D. RAM is used to store programs, while ROM is used to store data.
    • Answer: A
22. What is the function of the BIOS?
    • A. It boots the computer.
    • B. It manages the hardware.
    • C. It provides a user interface.
    • D. All of the above.
    • Answer: D
23. What is the difference between a virus and a worm?
    • A. A virus needs a host program to run, while a worm can run independently.
    • B. A virus can only spread through removable media, while a worm can spread over a network.
    • C. A virus is a self-replicating program, while a worm is not.
    • D. All of the above.
    • Answer: C
24. What is the difference between a Trojan horse and a backdoor?
    • A. A Trojan horse is a malicious program that masquerades as a legitimate program, while a backdoor is a hidden way into a computer system.
    • B. A Trojan horse can only steal data, while a backdoor can also be used to control the computer system.
    • C. A Trojan horse is installed by the user, while a backdoor is installed by the attacker.
    • D. All of the above.
    • Answer: A
25. What is the difference between a denial-of-service attack and a distributed denial-of-service attack?
    • A. A denial-of-service attack is an attack that makes a website or service unavailable, while a distributed denial-of-service attack is an attack that uses multiple computers to make a website or service unavailable.
    • B. A denial-of-service attack is an attack that is launched from a single computer, while a distributed denial-of-service attack is an attack that is launched from multiple computers.
    • C. A denial-of-service attack is an attack that is launched by a hacker, while a distributed denial-of-service attack is an attack that is launched by a botnet.
    • D. All of the above.
    • Answer: A
26. What is the difference between a firewall and an antivirus software?
    • A. A firewall protects a computer from unauthorized access, while an antivirus software protects a computer from malware.
    • B. A firewall is a hardware device, while an antivirus software is a software program.
    • C. A firewall is used to filter network traffic, while an antivirus software is used to scan files for malware.
    • D. All of the above.
    • Answer: A
27. What is the difference between a web browser and an email client?
    • A. A web browser is used to access websites, while an email client is used to send and receive emails.
    • B. A web browser is a software program, while an email client is a hardware device.
    • C. A web browser is used to view web pages, while an email client is used to compose and read emails.
    • D. All of the above.
    • Answer: A
28. What is the difference between a file and a folder?
    • A. A file is a unit of data, while a folder is a container for files.
    • B. A file is a physical object, while a folder is a logical object.
    • C. A file can only be opened by one program, while a folder can be opened by multiple programs.
    • D. All of the above.
    • Answer: A
29. What is the difference between a hard disk drive and a solid-state drive?
    • A. A hard disk drive uses spinning disks to store data, while a solid-state drive uses flash memory to store data.
    • B. A hard disk drive is slower than a solid-state drive.
    • C. A hard disk drive is more durable than a solid-state drive.
    • D. All of the above.
    • Answer: A
30. Which of the following is a programming language?
    • A. Java
    • B. Python
    • C. C++
    • D. All of the above
    • Answer: D
31. Which of the following is a scripting language?
    • A. JavaScript
    • B. PHP
    • C. Ruby
    • D. All of the above
    • Answer: D
32. Which of the following is a markup language?
    • A. HTML
    • B. CSS
    • C. XML
    • D. All of the above
    • Answer: D
33. Which of the following is a database management system?
    • A. MySQL
    • B. Oracle
    • C. Microsoft SQL Server
    • D. All of the above
    • Answer: D
34. Which of the following is a cloud computing service?
    • A. Amazon Web Services
    • B. Microsoft Azure
    • C. Google Cloud Platform
    • D. All of the above
    • Answer: D
35. Which of the following is a social networking site?
    • A. Facebook
    • B. Twitter
    • C. LinkedIn
    • D. All of the above
    • Answer: D
36. Which of the following is a search engine?
    • A. Google
    • B. Bing
    • C. Yahoo!
    • D. All of the above
    • Answer: D
37. Which of the following is a video streaming service?
    • A. Netflix
    • B. Hulu
    • C. Amazon Prime Video
    • D. All of the above
    • Answer: D
38. Which of the following is a music streaming service?
    • A. Spotify
    • B. Apple Music
    • C. Amazon Music
    • D. All of the above
    • Answer: D
39. Which of the following is a cloud gaming service?
    • A. Google Stadia
    • B. NVIDIA GeForce Now
    • C. Amazon Luna
    • D. All of the above
    • Answer: D
40. Which of the following is a virtual reality headset?
    • A. Oculus Quest 2
    • B. HTC Vive
    • C. PlayStation VR
    • D. All of the above
    • Answer: D
41. What is the most common type of network?
    • A. LAN
    • B. WAN
    • C. MAN
    • D. PAN
    • Answer: A
42. What is the difference between a LAN and a WAN?
    • A. A LAN is a local area network, while a WAN is a wide area network.
    • B. A LAN is a private network, while a WAN is a public network.
    • C. A LAN is a network that covers a small area, while a WAN is a network that covers a large area.
    • D. All of the above.
    • Answer: D
43. What is the difference between a MAN and a WAN?
    • A. A MAN is a metropolitan area network, while a WAN is a wide area network.
    • B. A MAN is a network that covers a city, while a WAN is a network that covers a country or continent.
    • C. A MAN is a private network, while a WAN is a public network.
    • D. All of the above.
    • Answer: B
44. What is the difference between a client and a server?
    • A. A client is a computer that requests resources from a server, while a server is a computer that provides resources to clients.
    • B. A client is a software program that requests resources from a server, while a server is a hardware device that provides resources to clients.
    • C. A client is a physical object, while a server is a logical object.
    • D. All of the above.
    • Answer: A
45. What is the difference between a web server and an application server?
    • A. A web server is a server that delivers web pages, while an application server is a server that runs applications.
    • B. A web server is a hardware device, while an application server is a software program.
    • C. A web server is a physical object, while an application server is a logical object.
    • D. All of the above.
    • Answer: A
46. What is the difference between a proxy server and a firewall?
    • A. A proxy server is a server that acts as an intermediary between a client and a server, while a firewall is a device that protects a network from unauthorized access.
    • B. A proxy server is a hardware device, while a firewall is a software program.
    • C. A proxy server is a physical object, while a firewall is a logical object.
    • D. All of the above.
    • Answer: A
47. What is the difference between a router and a switch?
    • A. A router is a device that connects networks, while a switch is a device that connects devices on the same network.
    • B. A router is a hardware device, while a switch is a software program.
    • C. A router is a physical object, while a switch is a logical object.
    • D. All of the above.
    • Answer: A
48. What is the difference between a hub and a switch?
    • A. A hub is a device that connects devices on the same network, while a switch is a device that connects devices on the same network and forwards traffic to the correct device.
    • B. A hub is a hardware device, while a switch is a software program.
    • C. A hub is a physical object, while a switch is a logical object.
    • D. All of the above.
    • Answer: A
49. What is the difference between a modem and a router?
    • A. A modem is a device that converts analog signals to digital signals and vice versa, while a router is a device that connects networks.
    • B. A modem is a hardware device, while a router is a software program.
    • C. A modem is a physical object, while a router is a logical object.
    • D. All of the above.
    • Answer: A
50. What is the difference between a Wi-Fi and a Bluetooth?
    • A. Wi-Fi is a wireless network that uses radio waves to transmit data, while Bluetooth is a wireless network that uses radio waves to transmit data over a short distance.
    • B. Wi-Fi is a faster network than Bluetooth.
    • C. Wi-Fi is a more secure network than Bluetooth.
    • D. All of the above.
    • Answer: A
51. What is the difference between a web browser and a search engine?
    • A. A web browser is a software program that allows users to view web pages, while a search engine is a website that allows users to search for information on the web.
    • B. A web browser is a hardware device, while a search engine is a software program.
    • C. A web browser is a physical object, while a search engine is a logical object.
    • D. All of the above.
    • Answer: A
52. What is the difference between a website and a web page?
    • A. A website is a collection of web pages, while a web page is a single document that is displayed on the web.
    • B. A website is a software program, while a web page is a hardware device.
    • C. A website is a physical object, while a web page is a logical object.
    • D. All of the above.
    • Answer: A
53. What is the difference between a URL and a web address?
    • A. A URL is a Uniform Resource Locator, while a web address is a way to identify a website on the internet.
    • B. A URL is a software program, while a web address is a hardware device.
    • C. A URL is a physical object, while a web address is a logical object.
    • D. All of the above.
    • Answer: A
54. What is the difference between a domain name and a top-level domain?
    • A. A domain name is the address of a website on the internet, while a top-level domain is the last part of a domain name.
    • B. A domain name is a software program, while a top-level domain is a hardware device.
    • C. A domain name is a physical object, while a top-level domain is a logical object.
    • D. All of the above.
    • Answer: A
55. What is the difference between a static website and a dynamic website?
    • A. A static website is a website that does not change, while a dynamic website is a website that changes depending on the user's input.
    • B. A static website is a software program, while a dynamic website is a hardware device.
    • C. A static website is a physical object, while a dynamic website is a logical object.
    • D. All of the above.
    • Answer: A
56. What is the difference between a blog and a wiki?
    • A. A blog is a website that is updated regularly with new content, while a wiki is a website that allows users to collaborate on content.
    • B. A blog is a software program, while a wiki is a hardware device.
    • C. A blog is a physical object, while a wiki is a logical object.
    • D. All of the above.
    • Answer: A
57. What is the difference between an email and a chat?
    • A. An email is a message that is sent over the internet, while a chat is a real-time conversation that is held over the internet.
    • B. An email is a software program, while a chat is a hardware device.
    • C. An email is a physical object, while a chat is a logical object.
    • D. All of the above.
    • Answer: A
58. What is the difference between a social network and a social media platform?
    • A. A social network is a website that allows users to connect with each other, while a social media platform is a website that allows users to share content with each other.
    • B. A social network is a software program, while a social media platform is a hardware device.
    • C. A social network is a physical object, while a social media platform is a logical object.
    • D. All of the above.
    • Answer: A
59. What is the difference between a cloud computing service and a platform as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a platform as a service is a service that provides access to a platform over the internet.
    • B. A cloud computing service is a software program, while a platform as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a platform as a service is a logical object.
    • D. All of the above.
    • Answer: A
60. What is the difference between a cloud computing service and an infrastructure as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while an infrastructure as a service is a service that provides access to infrastructure over the internet.
    • B. A cloud computing service is a software program, while an infrastructure as a service is a hardware device.
    • C. A cloud computing service is a physical object, while an infrastructure as a service is a logical object.
    • D. All of the above.
    • Answer: A
61. What is the difference between a cloud computing service and a disaster recovery as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a disaster recovery as a service is a service that provides access to disaster recovery solutions over the internet.
    • B. A cloud computing service is a software program, while a disaster recovery as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a disaster recovery as a service is a logical object.
    • D. All of the above.
    • Answer: A
62. What is the difference between a cloud computing service and a security as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a security as a service is a service that provides access to security solutions over the internet.
    • B. A cloud computing service is a software program, while a security as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a security as a service is a logical object.
    • D. All of the above.
    • Answer: A
63. What is the difference between a cloud computing service and a machine learning as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a machine learning as a service is a service that provides access to machine learning solutions over the internet.
    • B. A cloud computing service is a software program, while a machine learning as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a machine learning as a service is a logical object.
    • D. All of the above.
    • Answer: A
64. What is the difference between a cloud computing service and a blockchain as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a blockchain as a service is a service that provides access to blockchain solutions over the internet.
    • B. A cloud computing service is a software program, while a blockchain as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a blockchain as a service is a logical object.
    • D. All of the above.
    • Answer: A
65. What is the difference between a cloud computing service and a big data as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a big data as a service is a service that provides access to big data solutions over the internet.
    • B. A cloud computing service is a software program, while a big data as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a big data as a service is a logical object.
    • D. All of the above.
    • Answer: A
66. What is the difference between a cloud computing service and a virtual machine as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a virtual machine as a service is a service that provides access to virtual machines over the internet.
    • B. A cloud computing service is a software program, while a virtual machine as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a virtual machine as a service is a logical object.
    • D. All of the above.
    • Answer: A
67. What is the difference between a cloud computing service and a container as a service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a container as a service is a service that provides access to containers over the internet.
    • B. A cloud computing service is a software program, while a container as a service is a hardware device.
    • C. A cloud computing service is a physical object, while a container as a service is a logical object.
    • D. All of the above.
    • Answer: A
68. What is the difference between a cloud computing service and a serverless computing?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a serverless computing is a service that provides access to computing resources without the need to manage servers.
    • B. A cloud computing service is a software program, while a serverless computing is a hardware device.
    • C. A cloud computing service is a physical object, while a serverless computing is a logical object.
    • D. All of the above.
    • Answer: A
69. What is the difference between a cloud computing service and a content delivery network?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a content delivery network is a service that delivers content over the internet.
    • B. A cloud computing service is a software program, while a content delivery network is a hardware device.
    • C. A cloud computing service is a physical object, while a content delivery network is a logical object.
    • D. All of the above.
    • Answer: A
70. What is the difference between a cloud computing service and a web application firewall?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a web application firewall is a service that protects web applications from attacks.
    • B. A cloud computing service is a software program, while a web application firewall is a hardware device.
    • C. A cloud computing service is a physical object, while a web application firewall is a logical object.
    • D. All of the above.
    • Answer: A
71. What is the difference between a cloud computing service and a managed service?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a managed service is a service that provides management of computing resources over the internet.
    • B. A cloud computing service is a software program, while a managed service is a hardware device.
    • C. A cloud computing service is a physical object, while a managed service is a logical object.
    • D. All of the above.
    • Answer: A
72. What is the difference between a cloud computing service and a hybrid cloud?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a hybrid cloud is a deployment model that combines public cloud and private cloud resources.
    • B. A cloud computing service is a software program, while a hybrid cloud is a hardware device.
    • C. A cloud computing service is a physical object, while a hybrid cloud is a logical object.
    • D. All of the above.
    • Answer: A
73. What is the difference between a cloud computing service and a multi-cloud?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a multi-cloud is a deployment model that uses multiple cloud providers.
    • B. A cloud computing service is a software program, while a multi-cloud is a hardware device.
    • C. A cloud computing service is a physical object, while a multi-cloud is a logical object.
    • D. All of the above.
    • Answer: A
74. What is the difference between a cloud computing service and a private cloud?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a private cloud is a deployment model that provides computing resources to a single organization.
    • B. A cloud computing service is a software program, while a private cloud is a hardware device.
    • C. A cloud computing service is a physical object, while a private cloud is a logical object.
    • D. All of the above.
    • Answer: A
75. What is the difference between a cloud computing service and a community cloud?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a community cloud is a deployment model that provides computing resources to a specific community of organizations.
    • B. A cloud computing service is a software program, while a community cloud is a hardware device.
    • C. A cloud computing service is a physical object, while a community cloud is a logical object.
    • D. All of the above.
    • Answer: A
76. What is the difference between a cloud computing service and a mainframe?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a mainframe is a large computer that can handle a lot of data.
    • B. A cloud computing service is a software program, while a mainframe is a hardware device.
    • C. A cloud computing service is a physical object, while a mainframe is a logical object.
    • D. All of the above.
    • Answer: A
77. What is the difference between a cloud computing service and a supercomputer?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while a supercomputer is a very powerful computer that can handle complex calculations.
    • B. A cloud computing service is a software program, while a supercomputer is a hardware device.
    • C. A cloud computing service is a physical object, while a supercomputer is a logical object.
    • D. All of the above.
    • Answer: A
78. What is the difference between a cloud computing service and a grid computing?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while grid computing is a distributed computing model that uses multiple computers to solve a problem.
    • B. A cloud computing service is a software program, while grid computing is a hardware device.
    • C. A cloud computing service is a physical object, while grid computing is a logical object.
    • D. All of the above.
    • Answer: A
79. What is the difference between a cloud computing service and a peer-to-peer computing?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while peer-to-peer computing is a distributed computing model that uses computers to share resources with each other.
    • B. A cloud computing service is a software program, while peer-to-peer computing is a hardware device.
    • C. A cloud computing service is a physical object, while peer-to-peer computing is a logical object.
    • D. All of the above.
    • Answer: A
80. What is the difference between a cloud computing service and a distributed computing?
    • A. A cloud computing service is a service that provides access to computing resources over the internet, while distributed computing is a computing model that distributes tasks across multiple computers.
    • B. A cloud computing service is a software program, while distributed computing is a hardware device.
    • C. A cloud computing service is a physical object, while distributed computing is a logical object.
    • D. All of the above.
    • Answer: A
81. What is a database?
    • A. A database is a collection of data that is organized so that it can be easily accessed, managed, and updated.
    • B. A database is a software program that manages data.
    • C. A database is a physical object that stores data.
    • D. All of the above.
    • Answer: A
82. What is a relational database?
    • A. A relational database is a database that stores data in tables.
    • B. A relational database is a database that stores data in graphs.
    • C. A relational database is a database that stores data in trees.
    • D. All of the above.
    • Answer: A
83. What is a table in a relational database?
    • A. A table in a relational database is a collection of rows and columns.
    • B. A table in a relational database is a collection of records and fields.
    • C. A table in a relational database is a collection of objects and properties.
    • D. All of the above.
    • Answer: A
84. What is a row in a relational database?
    • A. A row in a relational database is a single record.
    • B. A row in a relational database is a single field.
    • C. A row in a relational database is a single object.
    • D. All of the above.
    • Answer: A
85. What is a column in a relational database?
    • A. A column in a relational database is a single field.
    • B. A column in a relational database is a single record.
    • C. A column in a relational database is a single object.
    • D. All of the above.
    • Answer: A
86. What is a primary key in a relational database?
    • A. A primary key in a relational database is a unique field that identifies each record.
    • B. A primary key in a relational database is a field that cannot be null.
    • C. A primary key in a relational database is a field that cannot be duplicated.
    • D. All of the above.
    • Answer: D
87. What is a foreign key in a relational database?
    • A. A foreign key in a relational database is a field that references a primary key in another table.
    • B. A foreign key in a relational database is a field that cannot be null.
    • C. A foreign key in a relational database is a field that cannot be duplicated.
    • D. All of the above.
    • Answer: A
88. What is a database management system (DBMS)?
    • A. A DBMS is a software program that manages data in a database.
    • B. A DBMS is a hardware device that manages data in a database.
    • C. A DBMS is a physical object that stores data in a database.
    • D. All of the above.
    • Answer: A
89. What are the three main types of DBMSs?
    • A. Relational DBMSs, hierarchical DBMSs, and network DBMSs.
    • B. Relational DBMSs, object-oriented DBMSs, and NoSQL DBMSs.
    • C. Hierarchical DBMSs, network DBMSs, and object-oriented DBMSs.
    • D. NoSQL DBMSs, object-oriented DBMSs, and relational DBMSs.
    • Answer: B
90. What is a NoSQL database?
    • A. A NoSQL database is a database that does not use the relational model.
    • B. A NoSQL database is a database that is not managed by a DBMS.
    • C. A NoSQL database is a database that is not stored on a physical device.
    • D. All of the above.
    • Answer: A
91. What is a query language?
    • A. A query language is a language that is used to interact with a database.
    • B. A query language is a language that is used to create a database.
    • C. A query language is a language that is used to delete a database.
    • D. All of the above.
    • Answer: A
92. What is SQL?
    • A. SQL is a query language that is used to interact with relational databases.
    • B. SQL is a query language that is used to create relational databases.
    • C. SQL is a query language that is used to delete relational databases.
    • D. All of the above.
    • Answer: A
93. What are the three main types of SQL queries?
    • A. SELECT, INSERT, and UPDATE.
    • B. SELECT, DELETE, and DROP.
    • C. INSERT, UPDATE, and DELETE.
    • D. All of the above.
    • Answer: A
94. What is a SELECT query?
    • A. A SELECT query is used to select data from a database.
    • B. A SELECT query is used to insert data into a database.
    • C. A SELECT query is used to update data in a database.
    • D. A SELECT query is used to delete data from a database.
    • Answer: A
95. What is an INSERT query?
    • A. An INSERT query is used to insert data into a database.
    • B. An INSERT query is used to select data from a database.
    • C. An INSERT query is used to update data in a database.
    • D. An INSERT query is used to delete data from a database.
    • Answer: A
96. What is an UPDATE query?
    • A. An UPDATE query is used to update data in a database.
    • B. An UPDATE query is used to select data from a database.
    • C. An UPDATE query is used to insert data into a database.
    • D. An UPDATE query is used to delete data from a database.
    • Answer: A
97. What is a DELETE query?
    • A. A DELETE query is used to delete data from a database.
    • B. A DELETE query is used to select data from a database.
    • C. A DELETE query is used to insert data into a database.
    • D. A DELETE query is used to update data in a database.
    • Answer: A
98. What is a join query?
    • A. A join query is used to combine data from two or more tables.
    • B. A join query is used to select data from a single table.
    • C. A join query is used to insert data into a single table.
    • D. A join query is used to delete data from a single table.
    • Answer: A
99. What is a subquery?
    • A. A subquery is a query that is nested within another query.
    • B. A subquery is a query that is used to select data from a single table.
    • C. A subquery is a query that is used to insert data into a single table.
    • D. A subquery is a query that is used to delete data from a single table.
    • Answer: A
100. What is a stored procedure?
     • A. A stored procedure is a set of SQL statements that are stored in the database.
     • B. A stored procedure is a set of SQL statements that are executed on the client machine.
     • C. A stored procedure is a set of SQL statements that are executed on the server machine.
     • D. All of the above.
     • Answer: A