CHAP 3 - NETWORK, INTRANET & INTERNET
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The document defines key internet-related terms like network, intranet, internet, and world wide web. It explains how networks connect computers and allow sharing of resources via cables and servers. An intranet is a private network that connects computers within an organization. The internet is a global network that connects billions of users via standard protocols. Information on the world wide web is accessed through web browsers like internet explorer using URLs, and search engines help users find information online. Email allows digital messaging between users by composing, sending, and receiving messages with attachments. Security and privacy are important when surfing the internet.
CHAP 3 - NETWORK, INTRANET & INTERNET
- 1. Network, Intranet & Internet At the end of the lesson, students should able to: • Define what is Network, Intranet & Internet. • Explain how Network, Intranet & Internet works. • Define what Is Web Browser. •Understand what is World Wide Web. • Explain how Web Browser works and how to find information. • Define and Explain how E-mail Works. • Know how to apply Security & Privacy when surfing.
- 2. Network Collection of hardware, interconnected by communication channel that allows us to share resources & information
- 3. How Network Works Computer Network Cable – (RJ45) Network Hub Server
- 4. Intranet & How It Works Secure Connection of computers using Internet Protocol (IP) to share resources within an Organization. Resources are shared in a server. User can access within the organization network and cannot be access outside organization network.
- 5. Internet Internet is an interconnected computer networks that use standard Internet Protocol Suite (TCP/IP). It connects billions of users that consists of academic, business, private or government networks.
- 6. How Internet Works CLIENT WEB SERVER OTHER MULTIPLE SERVER SERVER OF: THE INTERNET Modem Broadban 3G Network d MULTIPLE INTRANET Router- OF: Modem PC Laptop I Pad 2
- 7. World Wide Web System of information distribution using the Internet. Linked document written based on HTML (Hyper Text Markup Language) Contains Graphic, Audio, Video, etc. Navigation Links: allows user interaction with the web. Data transfer uses HTTP (Hyper Text Transfer Protocol)
- 8. Web Browser Application software for retrieving, presenting and surfing information on the internet. It access the World Wide Web using URL (Uniform Resource Identifier) example : www.yahoo.com. Example of Web Browser:
- 9. Internet Explorer HOME TOOLS ENTER URL NEW TAB HERE MENU BAR FAVOURITE S BAR SEARCH BOX VIEW FAVOURITES, FEEDS &
- 10. Finding Information on the net Using Search Engine ◦ www.google.com ◦ www.yahoo.com ◦ www.bing.com Online Encyclopedia ◦ www.wikipedia.com
- 11. Email Electronic Mail eg. cikgujohan@yahoo.com Method of exchanging digital messages from an author to one or more recipients. Compose, Receive, Forward, Reply, CC & BCC, Delete, Archive, and so on. Share/attach documents, file, song, picture. Popular free email provider: ◦ www.gmail.com ◦ www.mail.yahoo.com
- 12. Security & Privacy while surfing Protect your PC with Updated Antivirus. Never give out personal information (username / password) – number etc. Social Network: Never use your real name / picture. Never download games/movies/songs from entrusted site. Always run full computer scan to avoid malware from phishing our data.