1. What is the Internet? What is needed to connect to the Internet? What is needed to connect to the...
-
Upload
derick-franklin -
Category
Documents
-
view
216 -
download
0
Transcript of 1. What is the Internet? What is needed to connect to the Internet? What is needed to connect to the...
1
What is the Internet?What is needed to connect to th
e Internet?The World Wide Web Criteria to evaluate websitesBrowsing and searchingGlossary
What is the Internet?What is needed to connect to th
e Internet?The World Wide Web Criteria to evaluate websitesBrowsing and searchingGlossary
ContentContent
2
DefinitionThe Internet is a worldwide computer network, consisting of computers and networks that are linked using telephone lines, undersea cables,
satellite or microwave for the purpose of communication and sharing of resources.
Every computer that connects to the Internet or in a network must have its own unique IP (Internet Protocol) address that currently consists of 4 sets of digits separated by dots.
What is the Internet?What is the Internet?
3
What is needed to connect to the Internet?What is needed to connect to the Internet?Computer / other Internet-enabled device
Internet Service Provider
Internet connection
Wired connection – ADSL
Wireless connection– Cellular technology3G
4
ADSL connection services have two different speed specifications:
What is needed to connect to the Internet?What is needed to connect to the Internet?
512 Kbps / 128 Kbps
1Mbps / 256 Kbps
Download speed
Upload speed
5
The costs = monthly ISP cost + line rental
Access the Internet & phone calls at the same time.
Check for availability of serviceISPs offer different data packages
What is needed to connect to the Internet?What is needed to connect to the Internet?
ADSL
6
Freedom of Internet connectivity without having to have an ADSL line installed
Mobile access 3G modem or cellphone is used to
connect your computer to the cellular network for Internet access.
What is needed to connect to the Internet?What is needed to connect to the Internet?
Wireless connections
7
The World Wide Web (WWW) The World Wide Web (WWW) The World Wide Web is a service that runs on the
Internet and consists of a vast collection of interlinked, interactive documents stored on computers all over the
world, accessed via the Internet.
Website -related web pagesHome page – 1st page of web site
Web page – electronic document on Web
Hyperlink– built-in connection to another web page
Web server – website must be hosted here8
The World Wide Web (WWW) The World Wide Web (WWW) URL or web address
Uniform Resource Locator (URL)
Remember that an IP address is a numerical address that uniquely identifies a computer either on a
network or on the Internet.
The word protocol means a rule for communication.
9
Network Protocols Network Protocols
10
11
Format of URLsFormat of URLs
Types of websitesPortal website
• Selection of Internet services from one convenient location• Many are also Internet Service Providers who offer some of these services on their sites.
The World Wide Web (WWW) The World Wide Web (WWW)
Types of websitesNews website• Current events, news, sport, weather and exchange rates.
The World Wide Web (WWW) The World Wide Web (WWW)
• Many magazines and newspapers maintain websites that contain summaries of articles from the printed version and even articles not found in the printed version
Informational website• Most government institutions have an informational website.
• Census and tax information as well as factual information that can be used for research purposes.
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
Business or marketing website• Information about selling a product or service.
• Examples include: Woolworths, Pick and Pay, Kulula, SAA, Kalahari.net and Telkom
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
Personal website• Anyone can develop and maintain their own personal website to share interests, hobbies and life experiences with the world.
• Most people these days are using a blog or a social networking site for their personal website..
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
WikiA wiki is a website that allows for the collaborative editing and creating of the content of web pages
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
Educational website
Educational websites offer ways of formal and informal learning by means of tutorials and simulations.
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
Entertainment websiteAn entertainment website offer all forms of entertainment such as online videos, music, sport, gaming and much more.
Advocacy websiteThis type of website describes an idea, opinion or cause and usually presents the views of a particular group or association.
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
Web application website.A web application is any application that is
accessed over the Internet and is not stored on your local computer.
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
Content aggregatorA website or application that gathers different web content (such as news, weather, movie reviews, stock prices, etc.) from many different online sources• and displays it on its own website OR• distributes it (RSS documents are called news feeds, channels, web feeds or just feeds.)
Types of websites
The World Wide Web (WWW) The World Wide Web (WWW)
RSS
RSS stands for Real Simple Syndication
23
Activity 1
.
Criteria to evaluate websitesCriteria to evaluate websites
Most important is to cross-
reference information using
more than one site.
What is a web browser?
A web browser is a software application that allows one to view and explore web pages on the Web either via hyperlinks by typing the address in the address bar of the web browser.
Browsing and Searching Browsing and Searching
Most web browsers have the following features:
address bar
search bar
back button forward button
stop button
home button
tabbed browsing
favoritesprint refresh, reload
Browsing and Searching Browsing and Searching
What is a search engine?
A search engine is a program that is used to search for documents located on the Internet by using keywords or phrases entered by the user when looking for information.
diamond
Browsing and Searching Browsing and Searching
Tips for successful searching
Step 1: Decide exactly what you want to find.Step 2: Identify keywords.
Step 3: Use synonyms.
Step 4: Check your spelling.
Step 5: Use advanced search options
Browsing and Searching Browsing and Searching
RememberGive credit where it is due
Acknowledge a website source
Meevis, Hans. Jewellery Gallery. April 2011. [http://www.meevis.com/jewelry-gallery-0601.htm] 21/05/2011.
Author’s surname, name (if known).
Title of website.
Date on which the website was posted or updated.
[URL]
Date on which the website was visited by you.
Browsing and Searching Browsing and Searching
Searching for images
To save a picture
Save Picture As and choose the location you wish to save the picture to.
ORcopy the picture and paste it in an application
Browsing and Searching Browsing and Searching
31
Activity 2
32
Activity 3Understand and apply
GlossaryGlossary