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unit 3 internet and web application.pptx
- 1. INTERNET AND WEBAPPLICATIONS UNIT-3 S. Vasuki, M.C.A., Assistant Professor, Department of Computer Science Sri Sarada Niketan College of Science for Women, Karur.
- 2. Internet Basics: A ComprehensiveGuide Welcome! Today we'll explore the fascinating world of the internet, from its origins to its everyday applications.
- 3. Evolution of theInternet Early Networks The internet's roots lie in early computer networks like ARPANET, developed in the 1960s by the US Department of Defense. World Wide Web In the 1990s, Tim Berners-Lee invented the World Wide Web, making the internet accessible to the public through web browsers. Modern Internet Today, the internet is ubiquitous, with smartphones, social media, and cloud computing playing a crucial role in our lives.
- 4. Basic Terminology Server A computerthat stores and delivers information to other computers on the network. Client A computer that requests information from a server, such as your laptop or smartphone. IP Address A unique number assigned to each device on the internet, allowing them to communicate with each other. Domain Name A human-readable address for a website, such as google.com or amazon.com.
- 5. Getting Connected tothe Net Wireless Connection Connect to the internet through a wireless router, allowing you to access the internet without physical cables. Wired Connection Connect to the internet via an ethernet cable, offering a more stable and faster connection, especially for high-bandwidth activities. Mobile Data Access the internet through your mobile phone's data plan, providing internet access on the go.
- 6. Web Browsers andNavigation Web Browsers Software applications like Chrome, Firefox, and Safari that allow you to access websites and navigate the internet. Navigation Use the address bar to enter URLs, bookmarks to save frequently visited sites, and tabs to open multiple websites simultaneously. Search Engines Tools like Google, Bing, and Yahoo help you find information on the web by entering keywords or phrases.
- 7. Applications of theInternet 1 Communication Email, instant messaging, video calls, and social media platforms connect people worldwide. 2 Information Access to vast information resources, online libraries, news sites, and educational platforms. 3 Entertainment Streaming services, music platforms, online gaming, and social media provide a wide range of entertainment. 4 Commerce Online shopping, e-commerce, and digital marketplaces have revolutionized the way we buy and sell goods.
- 8. Introduction to Internet Protocols TCP/IP Thefoundation of the internet, allowing computers to communicate and exchange data. HTTP The protocol used to transfer files, such as web pages, between servers and web browsers. DNS The system that translates domain names into IP addresses, making it easier for users to access websites.
- 9. The Language ofthe Internet 1 HTML The markup language used to create web pages, defining the structure and content of websites. 2 CSS A language that controls the presentation and styling of web pages, defining the visual appearance of websites. 3 JavaScript A programming language that adds interactivity and dynamic behavior to web pages.
- 10. E-mail, Voicemail, andMessaging 1 Email Asynchronous communication, allowing you to send and receive messages at your convenience. 2 Voicemail Leave messages for others to listen to later, offering a convenient way to communicate when someone is unavailable. 3 Messaging Real-time communication, enabling instant conversations with individuals or groups.
- 11. Creating an EmailAddress and Net Meeting Create a free email account with popular services like Gmail, Outlook, or Yahoo Mail, enabling you to send and receive emails.