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Network, Intranet & InternetAt 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.
NetworkCollection of hardware,
interconnected by communication channel that allows us to share resources & information
How Network Works
Computer Network Cable – (RJ45)
Network HubServer
Intranet & How It WorksSecure 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.
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.
How Internet Works
INTRANET
Router-Modem
THE INTERNET
CLIENT SERVER
PC
Modem
MU
LTIP
LE
OF:
MU
LTIP
LE
OF:
WEB SERVER
Broadband
Laptop
I Pad 2
3G Network
OTHER SERVER
World Wide WebSystem 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)
Web BrowserApplication 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:
Internet ExplorerENTER URL
HERENEW TAB
HOME TOOLS
VIEW FAVOURITES, FEEDS & HISTORY
MENUBAR
FAVOURITES
BAR
SEARCHBOX
Finding Information on the netUsing Search Engine
◦www.google.com◦www.yahoo.com◦www.bing.com
Online Encyclopedia◦www.wikipedia.com
EmailElectronic Mail eg. [email protected]
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◦www.live.com.my
Security & Privacy while surfingProtect 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.