Www
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Tim Berners-Lee invented the World Wide Web in 1989-1990 while working at CERN as a way to share research over the internet. The web uses hypertext documents that can contain text, images, videos and other media and are accessed via browsers. It allows for simultaneous transfer of text and graphics using communication protocols running on standard networking infrastructure and markup languages to render pages.
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World wide Web
This presentation consists many many topic which covers.
1.world wide Web.
2.Difference between world wide web and internet.
3.history of world wide web.
Common online terminologies
This document defines and describes common online terminology used on the internet and world wide web. It provides definitions for electronic mail (email), wikis, social bookmarking, hypertext markup language (HTML), podcasts, voice over internet protocol (VoIP), streaming video, blogs, online communication methods like email and instant messaging, uniform resource locators (URLs), and RSS feeds. The document serves as a reference for understanding key terms used for different online technologies and applications.
Acem www
The World Wide Web is a system that allows information to be shared across the internet through web pages. It was invented by Tim Berners-Lee in 1989 at CERN as a way to share text and graphics. The web uses clients like web browsers to request pages from servers using HTTP and display them with HTML. Key components include browsers, servers, URLs, HTTP, and HTML. The web grew out of earlier systems and allows easy access to hyperlinked resources through a common language.
internet vs web
The Internet and the World Wide Web (WWW) are often used interchangeably but are different things. The Internet is a global network of interconnected computer networks that transfers information, while the Web is a system of internet servers that store and link documents to be accessed by users through the Internet. Specifically, the Internet was created in 1969 as ARPANET and connects computers through cables and wireless networks, while the Web was initiated in 1989 by Tim Berners-Lee and connects people through files and documents stored on servers that depend on the Internet to function.
Hyperlinks and netiquette slides
Hyperlinks and netiquette are important concepts for proper internet usage. A hyperlink allows users to jump to new documents or sections within a document by clicking text or images. Netiquette refers to rules of etiquette for communicating online, as certain behaviors are socially acceptable in digital situations that may not be in person. Some key netiquette rules include remembering the human on the other side, adhering to the same standards of behavior online as in real life, and considering online safety, reputations, copyright, and research skills in all internet activities. Following guidelines for hyperlinks and netiquette helps ensure smooth and respectful online interactions and communications.
Activity common online terminologies
This document defines common online terminology:
- Email allows sending, receiving, and storing messages and the first was sent via ARPANET in 1971.
- Wiki was invented by Ward Cunningham as "the simplest online database that could possibly work" and wiki means "fast" in Hawaiian.
- HTML is the markup language used for web pages and uses tags like <html> within content.
- Podcasts and netcasts are digital audio files available online for downloading and listening, often in a series.
- Social bookmarking services allow users to add, annotate, edit, and share bookmarks and tags since 1996.
Top services provided by internet
The document summarizes various internet services including communication services like email and newsgroups, information retrieval services like FTP and Archie, web services, the world wide web, video conferencing, online shopping, net banking, protocols, educational apps and resources, enhanced online storage capacity, and how online services can reduce time spent on tasks like food delivery, ticket booking, hotel booking, and cab booking.
Lec ture 9 using the internet
A computer network allows computers to exchange data and information by connecting together through special hardware and software. There are two main types of networks - wired networks which use physical cables to connect devices, and wireless networks which connect devices using radio waves without cables. Computers can be connected in a local area network within a single building, or in a wide area network across a broader geographical area like countries. The internet is a global network that allows people to browse and search for information online using internet browsers and search engines, and to send and receive email.
Recommended
World wide Web
This presentation consists many many topic which covers.
1.world wide Web.
2.Difference between world wide web and internet.
3.history of world wide web.
Common online terminologies
This document defines and describes common online terminology used on the internet and world wide web. It provides definitions for electronic mail (email), wikis, social bookmarking, hypertext markup language (HTML), podcasts, voice over internet protocol (VoIP), streaming video, blogs, online communication methods like email and instant messaging, uniform resource locators (URLs), and RSS feeds. The document serves as a reference for understanding key terms used for different online technologies and applications.
Acem www
The World Wide Web is a system that allows information to be shared across the internet through web pages. It was invented by Tim Berners-Lee in 1989 at CERN as a way to share text and graphics. The web uses clients like web browsers to request pages from servers using HTTP and display them with HTML. Key components include browsers, servers, URLs, HTTP, and HTML. The web grew out of earlier systems and allows easy access to hyperlinked resources through a common language.
internet vs web
The Internet and the World Wide Web (WWW) are often used interchangeably but are different things. The Internet is a global network of interconnected computer networks that transfers information, while the Web is a system of internet servers that store and link documents to be accessed by users through the Internet. Specifically, the Internet was created in 1969 as ARPANET and connects computers through cables and wireless networks, while the Web was initiated in 1989 by Tim Berners-Lee and connects people through files and documents stored on servers that depend on the Internet to function.
Hyperlinks and netiquette slides
Hyperlinks and netiquette are important concepts for proper internet usage. A hyperlink allows users to jump to new documents or sections within a document by clicking text or images. Netiquette refers to rules of etiquette for communicating online, as certain behaviors are socially acceptable in digital situations that may not be in person. Some key netiquette rules include remembering the human on the other side, adhering to the same standards of behavior online as in real life, and considering online safety, reputations, copyright, and research skills in all internet activities. Following guidelines for hyperlinks and netiquette helps ensure smooth and respectful online interactions and communications.
Activity common online terminologies
This document defines common online terminology:
- Email allows sending, receiving, and storing messages and the first was sent via ARPANET in 1971.
- Wiki was invented by Ward Cunningham as "the simplest online database that could possibly work" and wiki means "fast" in Hawaiian.
- HTML is the markup language used for web pages and uses tags like <html> within content.
- Podcasts and netcasts are digital audio files available online for downloading and listening, often in a series.
- Social bookmarking services allow users to add, annotate, edit, and share bookmarks and tags since 1996.
Top services provided by internet
The document summarizes various internet services including communication services like email and newsgroups, information retrieval services like FTP and Archie, web services, the world wide web, video conferencing, online shopping, net banking, protocols, educational apps and resources, enhanced online storage capacity, and how online services can reduce time spent on tasks like food delivery, ticket booking, hotel booking, and cab booking.
Lec ture 9 using the internet
A computer network allows computers to exchange data and information by connecting together through special hardware and software. There are two main types of networks - wired networks which use physical cables to connect devices, and wireless networks which connect devices using radio waves without cables. Computers can be connected in a local area network within a single building, or in a wide area network across a broader geographical area like countries. The internet is a global network that allows people to browse and search for information online using internet browsers and search engines, and to send and receive email.
INTERNET
The Internet revolution has radically changed social relations by connecting people and institutions around the world through advanced communication systems. The decentralized global Internet allows computers to connect through communication protocols using various means like cables and wireless connections. It provides a wide range of services like accessing web pages, emailing, newsgroups, file transfers, voice/video calls, streaming media, e-commerce, education and more.
Activity 13 common online terms
This document defines and describes common online terminology including:
- Email is a system for sending and receiving electronic text messages between computers via a network. Blogs allow individuals to immediately post information to a website for sharing thoughts and information. Online chat enables text-based communication between individuals or groups in real-time. Social bookmarking services allow users to save, annotate, and share bookmarks of web pages.
- A URL is an internet address that identifies resources on the web or through file transfer. Streaming delivers audio and video files that can be listened to or watched online as they download. Podcasts are episodic series of audio or video files that are subscribed to for download or streaming. VoIP uses the internet to allow voice
p7 e1 niurkavargas
The Internet is a global network that connects computers around the world through communication protocols over various connection methods. It allows for the sharing of information and resources on a worldwide scale, reducing barriers of distance and time. The Internet has revolutionized how people understand social relations by expanding social networks and providing access to a vast variety of information, people, and ideas from around the world. Key services the Internet provides include accessing web pages, email, newsgroups, file transfers, voice/video communication, streaming media, e-commerce, education, and more.
Harris
Empowerment Technology is a web development company in Lucknow, India that provides technical training. The World Wide Web (WWW) is a network of interlinked HTML pages accessed via HTTP that was invented by Tim Berners-Lee in 1991. The Web uses URLs to identify documents and resources that can be hyperlinked and accessed over the Internet. Empowerment Technology teaches about the importance of communication technologies like mobile phones, telephone, and Internet for locating, saving, sending, and editing information.
Activity 13 common online terminologies
The document discusses various common online tools and technologies including:
- Blogs, which allow users to share thoughts, ideas, and experiences on a personal website.
- Social bookmarking services that allow users to add, annotate, edit and share web documents and use tagging.
- URLs and HTTP which help reference web resources and enable file transfers and website pages.
- Streaming media which allows playing audio/video over a network while receiving data.
- Digital files that can be downloaded for portable media players and devices using the internet.
- VOIP which delivers multimedia and voice communications over the Internet Protocol network.
- Social networking applications that connect people with shared interests and networks.
Common Online Terminologies
This document defines and describes common technology terms used online including email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, streaming, blog, social networking, URL, and web feed. Email is for sending electronic messages over a network. A wiki is a collaboratively edited website. Social bookmarking enables sharing bookmarks online. HTML is the language used for web pages. A podcast is an episodic digital audio file. VoIP delivers voice calls over the internet. Online chat allows real-time text messaging. The WWW is a system of hyperlinked documents on the internet. Streaming plays media as it downloads. A blog is a website with discrete blog entries. Social networking facilitates online relationships.
Activity 9 common online terminologies
Electronic mail, commonly called email, allows digital messages to be exchanged between an author and recipients. A wiki is a website that allows users to add and update content using their web browser. Hypertext Markup Language (HTML) is the coding language used to write web pages so they display correctly.
P7 e1 david casallas afonso_english
The Internet is a global network of interconnected computers that allows people and institutions around the world to connect and share information over long distances. It provides a variety of services like accessing web pages, sending email, participating in online discussions, transferring files, and voice/video calls. The Internet revolution has radically changed social relations by expanding social networks and providing access to diverse information, people, and ideas from around the world.
Common Online Terminologies
This document defines and explains common online terminology used on the internet. It provides definitions for terms like email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, streaming, blog, social networking, URL, and web feed. Each term is defined in 1-2 sentences explaining its meaning and purpose.
Presentation1
The document discusses the Internet, how it works, and its applications in libraries. It defines the Internet as a global network of computers communicating using TCP/IP protocols. It describes how information is exchanged through packet switching between clients and servers using IP addresses. It then outlines several Internet applications for libraries, including using the Internet as an information source, library management, developing library websites and digital collections, and facilitating professional development.
Copia traducida de p7 ejercicio 1 ingles
The Internet allows computers around the world to connect through communication protocols over various connection methods. It has revolutionized how people interact and access information on a global scale by providing services like the World Wide Web for accessing linked documents, email for messaging, forums for discussion, file transfers, voice/video calls, streaming media, e-commerce, and more. The decentralized nature of the Internet has significantly reduced barriers to connecting people and organizations worldwide.
2002 0918 internet_history_and_growth
The document provides a history of the creation and early development of the Internet. It discusses pioneers like Paul Baran who developed the concept of packet switching, and Vint Cerf and Bob Kahn who created the TCP/IP protocol. It describes the creation of the ARPANET in 1969 which connected computers at UCLA, Stanford, UC Santa Barbara, Utah, and BBN, laying the foundation for the Internet. It also discusses how the Internet grew throughout the 1970s and 1980s with the development of technologies like Ethernet, TCP/IP, and the World Wide Web.
Web
The document discusses the history and workings of the World Wide Web (WEB). It notes that the WEB contains the largest knowledge base on Earth, accessible via the Internet. It originated as a CERN project in 1989 by Tim Berners-Lee and allows users to access and share information through websites and applications. Behind the scenes, server-side technologies dynamically generate content from databases to display in web browsers using HTML and CSS.
P1 e1 santiago martínez
The document discusses how advances in communication systems and the Internet have reduced barriers of distance and time by interconnecting people and institutions around the world. The Internet revolution has radically changed understanding of social relations by expanding social connections and access to varied information, people, and ideas. The Internet is a global, decentralized network of computers that connects computers through communication protocols using cables, fiber optics, wireless, and other means, providing a range of services like accessing web pages, email, messaging, file transfers, voice/video calls, media, online purchases, education and more.
File Sharing
File sharing is the practice of distributing
or providing access to
digitally stored information.
Wwwkeyterms
Packet switching breaks files into smaller packets that are labeled and routed over a network to be reassembled at their destination. ARPA was created by the government in response to Sputnik to fund research including the development of the ARPANET, the first network that interconnected early computer sites using packet switching. The introduction of personal computers, email, TCP, hypertext, browsers, and improved routing technologies led to the creation of the Internet and World Wide Web.
Common Online Terminologies
This document defines and provides brief histories of common online terminology:
- Email is digital messages sent from one computer to another and the first was sent in 1971. Blogs are websites with discrete posts displayed in reverse chronological order, known as "weblog" since 1997. Chat involves real-time text messaging between users, starting with Talkomatic in 1974. URLs identify web resources and were standardized in 1994. Bookmarking enables users to save and share web document links, starting with del.icio.us in 2003.
Common Online Terminologies
This document defines and describes common online terminology used on the internet. It defines terms like email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, streaming, blog, social networking, URL, and web feed. Each term is concisely explained in one to two sentences. The document serves as a useful reference for understanding basic internet terminology.
Internet and web by Gulshan K Maheshwari(QAU)
The document provides an overview of the history and development of the internet and world wide web. It discusses how Tim Berners-Lee first developed the idea for a hypertext-based information system in 1989 while working at CERN. It then outlines the development of key technologies and protocols that led to the creation of the internet, including ARPANET, TCP/IP, domain name addressing, HTML, and HTTP. The document also distinguishes between related terms like the internet, intranets, and the world wide web.
INTERNET.pptx
The document discusses the internet and its key components. It begins with an introduction to the internet as the largest computer network connecting billions of users worldwide. It then provides a brief history of the internet from its origins in the 1980s to widespread commercial use in the 1990s. Key internet pioneers like Vint Cerf and Tim Berners-Lee who developed core internet technologies like TCP/IP and the World Wide Web are also mentioned. The document outlines important internet services and protocols as well as advantages and disadvantages of the internet.
Internet
So, this was our FIRST SEMESTER presentation on "Internet".
Everyone is familiar with the word internet so, in this presentation we have tried to gather more and more information about internet from reliable sources so as to enhance knowledge.
hope this will help you!!!!
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INTERNET
The Internet revolution has radically changed social relations by connecting people and institutions around the world through advanced communication systems. The decentralized global Internet allows computers to connect through communication protocols using various means like cables and wireless connections. It provides a wide range of services like accessing web pages, emailing, newsgroups, file transfers, voice/video calls, streaming media, e-commerce, education and more.
Activity 13 common online terms
This document defines and describes common online terminology including:
- Email is a system for sending and receiving electronic text messages between computers via a network. Blogs allow individuals to immediately post information to a website for sharing thoughts and information. Online chat enables text-based communication between individuals or groups in real-time. Social bookmarking services allow users to save, annotate, and share bookmarks of web pages.
- A URL is an internet address that identifies resources on the web or through file transfer. Streaming delivers audio and video files that can be listened to or watched online as they download. Podcasts are episodic series of audio or video files that are subscribed to for download or streaming. VoIP uses the internet to allow voice
p7 e1 niurkavargas
The Internet is a global network that connects computers around the world through communication protocols over various connection methods. It allows for the sharing of information and resources on a worldwide scale, reducing barriers of distance and time. The Internet has revolutionized how people understand social relations by expanding social networks and providing access to a vast variety of information, people, and ideas from around the world. Key services the Internet provides include accessing web pages, email, newsgroups, file transfers, voice/video communication, streaming media, e-commerce, education, and more.
Harris
Empowerment Technology is a web development company in Lucknow, India that provides technical training. The World Wide Web (WWW) is a network of interlinked HTML pages accessed via HTTP that was invented by Tim Berners-Lee in 1991. The Web uses URLs to identify documents and resources that can be hyperlinked and accessed over the Internet. Empowerment Technology teaches about the importance of communication technologies like mobile phones, telephone, and Internet for locating, saving, sending, and editing information.
Activity 13 common online terminologies
The document discusses various common online tools and technologies including:
- Blogs, which allow users to share thoughts, ideas, and experiences on a personal website.
- Social bookmarking services that allow users to add, annotate, edit and share web documents and use tagging.
- URLs and HTTP which help reference web resources and enable file transfers and website pages.
- Streaming media which allows playing audio/video over a network while receiving data.
- Digital files that can be downloaded for portable media players and devices using the internet.
- VOIP which delivers multimedia and voice communications over the Internet Protocol network.
- Social networking applications that connect people with shared interests and networks.
Common Online Terminologies
This document defines and describes common technology terms used online including email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, streaming, blog, social networking, URL, and web feed. Email is for sending electronic messages over a network. A wiki is a collaboratively edited website. Social bookmarking enables sharing bookmarks online. HTML is the language used for web pages. A podcast is an episodic digital audio file. VoIP delivers voice calls over the internet. Online chat allows real-time text messaging. The WWW is a system of hyperlinked documents on the internet. Streaming plays media as it downloads. A blog is a website with discrete blog entries. Social networking facilitates online relationships.
Activity 9 common online terminologies
Electronic mail, commonly called email, allows digital messages to be exchanged between an author and recipients. A wiki is a website that allows users to add and update content using their web browser. Hypertext Markup Language (HTML) is the coding language used to write web pages so they display correctly.
P7 e1 david casallas afonso_english
The Internet is a global network of interconnected computers that allows people and institutions around the world to connect and share information over long distances. It provides a variety of services like accessing web pages, sending email, participating in online discussions, transferring files, and voice/video calls. The Internet revolution has radically changed social relations by expanding social networks and providing access to diverse information, people, and ideas from around the world.
Common Online Terminologies
This document defines and explains common online terminology used on the internet. It provides definitions for terms like email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, streaming, blog, social networking, URL, and web feed. Each term is defined in 1-2 sentences explaining its meaning and purpose.
Presentation1
The document discusses the Internet, how it works, and its applications in libraries. It defines the Internet as a global network of computers communicating using TCP/IP protocols. It describes how information is exchanged through packet switching between clients and servers using IP addresses. It then outlines several Internet applications for libraries, including using the Internet as an information source, library management, developing library websites and digital collections, and facilitating professional development.
Copia traducida de p7 ejercicio 1 ingles
The Internet allows computers around the world to connect through communication protocols over various connection methods. It has revolutionized how people interact and access information on a global scale by providing services like the World Wide Web for accessing linked documents, email for messaging, forums for discussion, file transfers, voice/video calls, streaming media, e-commerce, and more. The decentralized nature of the Internet has significantly reduced barriers to connecting people and organizations worldwide.
2002 0918 internet_history_and_growth
The document provides a history of the creation and early development of the Internet. It discusses pioneers like Paul Baran who developed the concept of packet switching, and Vint Cerf and Bob Kahn who created the TCP/IP protocol. It describes the creation of the ARPANET in 1969 which connected computers at UCLA, Stanford, UC Santa Barbara, Utah, and BBN, laying the foundation for the Internet. It also discusses how the Internet grew throughout the 1970s and 1980s with the development of technologies like Ethernet, TCP/IP, and the World Wide Web.
Web
The document discusses the history and workings of the World Wide Web (WEB). It notes that the WEB contains the largest knowledge base on Earth, accessible via the Internet. It originated as a CERN project in 1989 by Tim Berners-Lee and allows users to access and share information through websites and applications. Behind the scenes, server-side technologies dynamically generate content from databases to display in web browsers using HTML and CSS.
P1 e1 santiago martínez
The document discusses how advances in communication systems and the Internet have reduced barriers of distance and time by interconnecting people and institutions around the world. The Internet revolution has radically changed understanding of social relations by expanding social connections and access to varied information, people, and ideas. The Internet is a global, decentralized network of computers that connects computers through communication protocols using cables, fiber optics, wireless, and other means, providing a range of services like accessing web pages, email, messaging, file transfers, voice/video calls, media, online purchases, education and more.
File Sharing
File sharing is the practice of distributing
or providing access to
digitally stored information.
Wwwkeyterms
Packet switching breaks files into smaller packets that are labeled and routed over a network to be reassembled at their destination. ARPA was created by the government in response to Sputnik to fund research including the development of the ARPANET, the first network that interconnected early computer sites using packet switching. The introduction of personal computers, email, TCP, hypertext, browsers, and improved routing technologies led to the creation of the Internet and World Wide Web.
Common Online Terminologies
This document defines and provides brief histories of common online terminology:
- Email is digital messages sent from one computer to another and the first was sent in 1971. Blogs are websites with discrete posts displayed in reverse chronological order, known as "weblog" since 1997. Chat involves real-time text messaging between users, starting with Talkomatic in 1974. URLs identify web resources and were standardized in 1994. Bookmarking enables users to save and share web document links, starting with del.icio.us in 2003.
Common Online Terminologies
This document defines and describes common online terminology used on the internet. It defines terms like email, wiki, social bookmarking, HTML, podcast, VoIP, online chat, WWW, streaming, blog, social networking, URL, and web feed. Each term is concisely explained in one to two sentences. The document serves as a useful reference for understanding basic internet terminology.
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Internet and web by Gulshan K Maheshwari(QAU)
The document provides an overview of the history and development of the internet and world wide web. It discusses how Tim Berners-Lee first developed the idea for a hypertext-based information system in 1989 while working at CERN. It then outlines the development of key technologies and protocols that led to the creation of the internet, including ARPANET, TCP/IP, domain name addressing, HTML, and HTTP. The document also distinguishes between related terms like the internet, intranets, and the world wide web.
INTERNET.pptx
The document discusses the internet and its key components. It begins with an introduction to the internet as the largest computer network connecting billions of users worldwide. It then provides a brief history of the internet from its origins in the 1980s to widespread commercial use in the 1990s. Key internet pioneers like Vint Cerf and Tim Berners-Lee who developed core internet technologies like TCP/IP and the World Wide Web are also mentioned. The document outlines important internet services and protocols as well as advantages and disadvantages of the internet.
Internet
So, this was our FIRST SEMESTER presentation on "Internet".
Everyone is familiar with the word internet so, in this presentation we have tried to gather more and more information about internet from reliable sources so as to enhance knowledge.
hope this will help you!!!!
web world wide defination introduction.pptx
Tim Berners-Lee originally proposed the World Wide Web in 1989 at CERN as a system for sharing information over a computer network. It utilized HTML for formatting documents, URLs for uniquely addressing resources, and HTTP for transporting messages. These basic technologies provided the building blocks for the web. HTTP became widely adopted, allowing the proliferation of static web pages in the early 1990s. This eventually led to more complex, dynamic web applications that still rely on HTTP and its request-response model today.
Internet Technology
The document provides information on various topics related to internet technology:
- It describes what the internet is, its history and how it connects millions of computers globally. Tim Berners-Lee invented the World Wide Web in 1990.
- It discusses different types of internet connections like dial-up and broadband, and defines an Internet Service Provider. BSNL has the largest market share in India.
- Key internet concepts covered include protocols, search engines, web browsers, email and how they facilitate communication and sharing of information online.
- Static and dynamic web pages, websites, servers, and protocols like FTP, SMTP, POP3 and IMAP are also summarized.
World wide web (WWW)
The document provides an overview of the World Wide Web. It discusses that the World Wide Web is a way of exchanging information between computers on the Internet using browsers to view pages of images, text, and sounds. The agenda outlines topics like the background of the WWW being invented in 1989 at CERN, its structure involving clients, servers, and pages constructed with HTML, and fundamental concepts like hypertext links and URLs. Examples are given and it discusses the growth of the WWW and difference between the Internet and World Wide Web.
Internet
- In the 1970s, protocols for transferring information over the internet were developed, and in the early 1980s new groups and email emerged. Tim Berners-Lee is considered the father of the internet and creator of the World Wide Web in 1991. The internet is a vast collection of global networks that allows people to share information and communicate internationally. It requires a computer, modem, phone line, software, and internet service provider to connect. Common internet uses include communication, research, entertainment, and e-commerce.
Module 1 Basic.pptx
The document outlines the syllabus for the CSE2067 - Web Technology course, including introductions to XHTML, clients and servers, URLs, web browsers, web servers, and the basics of the World Wide Web. It also discusses the history and components of the Internet, hardware and software requirements, domain names, DNS, and the different types of servers used on the web. The basics of web pages, hyperlinks, and URL formats are introduced as well.
1.2 World Wide Web_0.pptx
ICT refers to technologies that enable communication between humans, including hardware and software. It is commonly misunderstood to only refer to the internet and computers, but it actually includes any technology used for communication. The most commonly used internet service is the World Wide Web, which was created by Tim Berners-Lee and allows people to search for, access, and share data through interlinked web pages accessed via browsers.
Services of internet
The document discusses various services available on the Internet, including:
1) The World Wide Web (WWW), which allows documents and resources to be identified by URLs and linked through hyperlinks.
2) File Transfer Protocol (FTP) for transferring files between a client and server.
3) Telnet for remotely logging into another computer on the same network.
4) Gopher protocol for distributing, searching, and retrieving documents.
Services of internet
This document defines and describes several key internet services and protocols:
The World Wide Web (WWW) allows documents and resources to be identified by URLs and linked through hyperlinks. File Transfer Protocol (FTP) transfers files between clients and servers. Telnet allows users to log into remote computers. Gopher distributes, searches, and retrieves documents. Internet Protocol (IP) addresses identify devices on a network and locate them. Domain names define administrative control within the internet. Web browsers retrieve and navigate web pages through hyperlinks. Search engines identify items in databases corresponding to user keywords. Electronic mail exchanges digital messages between computer users.
Computer Network
A computer network connects hardware and devices through communication channels to share resources and information. A local area network (LAN) connects devices in a small geographic area like a home or office through nodes. LANs can connect to wide area networks (WANs) using routers. A metropolitan area network (MAN) interconnects multiple LANs using high-capacity links to provide services to WANs and the Internet. The Internet is the largest global network of interconnected computers that allows sharing of information through services like email, file transfer, remote access, and discussion groups. The World Wide Web uses the Internet and hypertext transfer protocol to share hyperlinked documents through web servers and browsers.
GR 12 CAT Network Technologies Lesson 1.pdf
Wide Area Networks
Definitions, purpose and role
internet as an example of WAN
Internet services (uses, purpose, advantages, disadvantages, limitations, examples
Real time messaging - instant messaging and chat
Voice over Protocol (VoIP)
File transfer Protocol (FTP)
File sharing
world wide web
The document provides an overview of the history and components of the World Wide Web (WWW). It discusses how Tim Berners-Lee invented the WWW in 1989 while working at CERN to help scientists share research online. The core components that make up the WWW include clients/browsers, servers, hypertext transfer protocol, hypertext markup language, and uniform resource identifiers. The document also distinguishes the WWW from the underlying Internet and describes how the WWW works using these components.
Activity 11 common online terminologies
The document discusses several key internet technologies including email, wikis, social bookmarking, HTML, podcasts, VoIP, streaming, blogs, social networking, URLs, and web feeds. It provides brief definitions and key details about each technology, such as how email predated the internet, wikis allow collaborative website building, social bookmarking shares bookmarks online, and URLs identify internet resources.
Cyber extension
Cyber extension uses information and communication technologies like the internet, networks, and multimedia to improve farmers' access to information. It allows for interactive communication between researchers, extension workers, and farmers from anywhere in the world. Important cyber extension tools include email, file transfer protocol, usenet newsgroups, and the world wide web. Cyber extension can provide up-to-date market prices and weather information, question and answer services, and access to government programs. While it provides benefits like low cost access to vast information, issues remain around unreliable infrastructure in rural areas and lack of locally relevant content in local languages. Overall, cyber extension has the potential to greatly improve the transfer of technology to farmers.
Computer Networks Module 1-part 1.pdf
18CS52 VTU Computer Network & Security
MODULE 1-Part 1
Principles of Network Applications: Network Application Architectures, Processes Communicating, Transport Services Available to Applications, Transport Services Provided by the Internet, Application-Layer Protocols. The Web and HTTP: Overview of HTTP, Non-persistent and Persistent Connections, HTTP Message Format, User-Server Interaction: Cookies, Web Caching, The Conditional GET, File Transfer: FTP Commands & Replies, Electronic Mail in the Internet: SMTP, Comparison with HTTP, Mail Message Format, Mail Access Protocols
World wide web
The World Wide Web (WWW) was invented by Tim Berners-Lee in 1989 while employed at CERN in Switzerland. He wrote the first web browser and server in 1990. The WWW is a global information system where documents and resources are identified by URLs and interconnected via hyperlinks, allowing information to be shared across the internet. It significantly reduced the difficulty of implementing web servers and browsers compared to earlier systems.
Intro to internet 1
The document provides an overview of the Internet and how it functions. It discusses that the Internet is a global network connecting millions of computers without any central ownership or management. It also describes how the World Wide Web is a system of interlinked web pages accessed via the Internet. Finally, it outlines some key components of the Internet like browsers, search engines, URLs and protocols as well as non-web services like email, file transfers, and teleconferencing.
Invention of Internet
A simple ppt about how the internet was invented and how it has developed through different phases of time
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V35 keys-c
Keys in databases help uniquely identify rows in tables. The main types of keys are:
1. Primary keys uniquely identify each row and cannot contain duplicate values.
2. Foreign keys link rows between tables and must match the primary key of another table.
3. Composite/compound keys combine two or more columns to uniquely identify rows, since the columns individually may not be unique.
Surrogate keys are artificial primary keys used when the table lacks a natural candidate key to uniquely identify rows. Other keys include unique keys, alternate keys, candidate keys, and super keys. Keys are important for maintaining data integrity and relationships between tables.
V34 numeric function-c
This document summarizes several numeric functions in SQL including ABS(), CEIL(), FLOOR(), MOD(), POW(), ROUND(), TRUNCATE(), SQRT(), SIGN(), RAND(), RADIANS(), DEGREES(), GREATEST(), and LEAST(). For each function, it provides the syntax, a brief description of what the function does, and an example calculation. The functions perform operations on numbers like returning the absolute value, ceiling, floor, remainder of division, a number raised to a power, rounding or truncating decimals, square root, and determining the greatest or least value in a list.
V33 date function-c
The document discusses 10 MySQL date functions - CURDATE(), NOW(), SYSDATE(), DATE(), MONTH(), YEAR(), DAYNAME(), DAYOFWEEK(), DAYOFYEAR(), and DAYOFMONTH(). For each function, it provides a brief description, syntax example, and expected output. The functions allow extracting various components like current date, time, month, year, weekday name or index from date/datetime expressions in MySQL.
V31 having
The document discusses the HAVING clause in SQL, which operates on grouped records returned by a GROUP BY clause, allowing only groups that meet the specified criteria to be returned. It notes that HAVING applies to summarized group records whereas WHERE applies to individual records, and provides an example syntax using SELECT, FROM, WHERE, GROUP BY, and HAVING. The purpose of the HAVING clause is to restrict groupings to those meeting certain criteria, like when not wanting to perform groupings on all table data.
V30 full join(union intersect etc)
The document discusses various "Show" commands in MySQL that can retrieve database, table, and schema information. It explains that SHOW DATABASES lists databases on the server, SHOW TABLES lists tables in a database, and SHOW CREATE TABLE shows the CREATE TABLE statement for a specific table. Examples of syntax are provided for each command, including using LIKE clauses to filter results by database or table name patterns.
V29 group by-c
The GROUP BY statement in SQL groups the results of a SELECT query by one or more columns. It is often used with aggregate functions to collect and summarize data across multiple records. The syntax includes specifying the column names to GROUP BY after the FROM table in the SELECT query.
V28 view
A view is a virtual table based on the result set of an SQL statement. Views allow you to present data from one or more tables in a customized way without modifying the base tables. Views can be created using the CREATE VIEW statement by specifying the columns and tables to include. Views can also be dropped using the DROP VIEW statement or updated using the CREATE OR REPLACE VIEW command.
V27 constraint
SQL constraints are rules that limit the type of data that can be stored in database tables. There are different types of constraints including primary keys, unique constraints, not null constraints, foreign keys, check constraints, default values, and indexes. Primary keys uniquely identify each row, unique constraints ensure all column values are different, foreign keys link data between tables, and check constraints verify data meets certain conditions.
V26 key
The document discusses various "Show" commands in MySQL that can retrieve database, table, and schema information. It explains that SHOW DATABASES lists databases on the server, SHOW TABLES lists tables in a database, and SHOW CREATE TABLE shows the CREATE TABLE statement for a specific table. Examples of syntax are provided for each command, including using LIKE clauses to filter results by database or table name patterns.
V25 sql index
Indexes are used to retrieve data from a database more quickly for searches and queries. The document discusses how to create, show, drop, and rename indexes in MySQL using SQL statements like CREATE INDEX, SHOW INDEXES, DROP INDEX, and ALTER TABLE. It also covers advantages like speeding up SELECT queries and making rows unique, and disadvantages like additional disk space usage and slower INSERT, UPDATE, DELETE operations.
V24 cartesion product-c
The Cartesian product is a set operation that generates all possible ordered pairs from two or more sets. It is calculated by multiplying the number of rows of each table. The document provides an example of calculating the Cartesian product of an Employees table with 5 rows and a Salary table with 3 rows, which is 5 * 3 = 15 total rows. It also defines the degree of a relation as the number of attributes in its schema, and calculates the degree of the Employees and Salary tables by adding their total columns.
V23 function-2
This document describes 14 string functions in SQL: UPPER(), LOWER(), LTRIM(), RTRIM(), TRIM(), LENGTH(), LEFT(), RIGHT(), INSTR(), INITCAP(), CONCAT(), SUBSTR(), POSITION(), and CHAR(). For each function, it provides the syntax, a description of what the function does, and an example of how to use the function in a SQL query.
V22 function-1
The document discusses several aggregate functions in SQL including SUM(), MAX(), MIN(), COUNT(), AVG(). It provides the syntax and examples of using each function with and without conditions to get the total sum, largest value, smallest value, number of rows, and average value from columns in tables.
V21 in operator
The IN operator allows specifying multiple values in a WHERE clause as an alternative to multiple OR conditions. It is used in a SELECT statement to retrieve rows where the column value matches any value in the list. For example, to select all employee names from cities Kota, Jaipur, or Abu. The NOT IN operator functions the same but selects rows where the column value does not match any in the list, retrieving employees not from those cities.
V20 bet ween operator-c
The BETWEEN operator in SQL selects values within a given numeric, text, or date range and includes the begin and end values. The BETWEEN syntax is used in a WHERE clause to retrieve rows where a column value is between two values, such as retrieving employee names where salary is between $500 and $1500. The NOT BETWEEN operator does the opposite by selecting values outside of the given range.
V19 join method-c
Joins are used to combine data from multiple tables and come in several types. The main types are inner joins, left joins, right joins, full joins, and self joins. Inner joins return rows where there are matches in both tables, left joins return all rows from the left table even if no match exists in the right table, and right joins are the opposite of left joins. Full joins are not directly supported in MySQL and require a combination of joins and unions. Self joins match a table to itself.
V18 alias-c
Aliases in SQL are temporary names given to tables or columns to make them more readable in a query. An alias only exists for the duration of the query. Syntax examples show how to alias a table using a nickname after the table name in a SELECT statement. Column aliases can also be specified by aliasing the table and then referencing columns. Aliases are commonly used in join queries to distinguish columns from different tables that may have the same name.
V17 show command-c
The document discusses various "Show" commands in MySQL that can retrieve database, table, and schema information. It explains that SHOW DATABASES lists databases on the server, SHOW TABLES lists tables in a database, and SHOW CREATE TABLE shows the CREATE TABLE statement for a specific table. Examples of syntax are provided for each command, including using LIKE clauses to filter results by database or table name patterns.
V16 sql comments-c
SQL comments are used to explain sections of code or prevent execution. There are two types of comments - single line comments that start with -- and multi-line comments that start with /* and end with */. Single line comments ignore everything after -- on a line, while multi-line comments ignore everything between /* and */.
V15 like operator-c
The LIKE operator is used in a WHERE clause to search for a specified pattern in a column using wildcard characters. It uses two wildcards - the percent sign (%) to match any substring and the underscore (_) to match a single character. The percent sign can match any substring, while the underscore matches any single character. Examples show how the LIKE operator with wildcards can be used to search for names starting with "a" or containing "s_ _ _" in a table.
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Www
- 2. World Wide Web Invented By : Tim Berners-Lee
- 3. • Is a system of interlinked hypertext documents • Accessed via the Internet with browser • Web pages contain text, images, videos and other multimedia.
- 4. 1989-1990 – Tim Berners-Lee invents the World Wide Web at CERN Means for transferring text and graphics simultaneously Client/Server data transfer protocol Communication via application level protocol System ran on top of standard networking infrastructure Text mark up language Not invented by Bernes-Lee Simple and easy to use Requires a client application to render text/graphics
- 6. • Mainly free information • Low cost of initial connection • Rapid interactive communication • Facilitates the exchange of huge volumes of data • Accesible from anywhere • Has become the global media • Danger of overload and excess information • Difficult to filter and prioritize information information • No guarantee of finding what one is looking for • No regulation • No quality control over available data
- 7. Internet • The Internet is a global system of interconnected computer networks. • Its access is provided by ISPs. • It runs applications like www, ftp, html etc World Wide Web • Web is collection of text documents and other resources, linked by hyperlinks and URLs • Usually accessed by web browsers • Its an application running on Internet
- 8. THANK YOU