Today’s Lecture was on using web-based resources.
We discussed the World Wide Web.
We looked at the Net vs. Web
· Historical perspective of the Web
· Defining the World Wide Web
· Web protocols
· Web browsers/interface
Net Vs. Web
On the net you will find computers
On the web you will find documents, sounds, videos and most importantly information
On the net connections are cables between computers
On the web connections are hypertext links
The Web
· Is an abstract virtual space of information
· It exists because of the programs which communicate between computers on the internet
· Could not exist without the internet
· Made the net useful because people are really interested in information and they don’t have to know about computers and cables
Before the web – the net
· The first paper was on packet switching theory published in July 1961
· 1965 a computer in Mass. Was connected to one in California using a low speed dial-up telephone
· This was the first computer network ever built
· In 1969, four university host computers were connected together into ARPANET
The web was developed by Tim Bernes-Lee (a researcher CERN) in 1989 to facilitate sharing research information.
The web is a universe of accessible information stored on computers throughout the world. The information is available through a gigantic network called the internet.
World Wide Web
World Wide Web Protocols
· TCP/IP – Transmission Control Protocol/ Internet Protocol
· HTTP – Hypertext Transfer Protocol
· DNS - Domain Name System
· URL – Uniform/Universal Resource Locator
The World Wide Web is the content of a network of computers using TCP/IP to communicate between each other.
TCP allows data/binary signals to be converted into telephone like signals and transferred along existing telephone cables. These are converted back to data at the destination computer.
IP is a protocol that enables data to be routed from one network to another over the internet.
The World Wide Web is the visible part of the internet and it uses HTTP and HTML to instruct a computer how to display and/or exchange data between computers.
DNS – Domain Name System Conventions
· WWW in front of a web address
· Com, org, net are top level domain international
· Au, uk and nz country codes associated with specific countries
Ø Com – Commercial (commercial nature)
Ø Org – Organisational (non-profit)
Ø Net – Network ( when com not available)
Ø Gov – Government
Ø Edu – Educational
Tools needed for the World Wide Web
· Computer
· Modem
· Router
· Dial-up software or browser software
· Telephone line
= WWW
Search engines = intelligent use of the World Wide Web
Web browsers are programs that allow uses to access and explore the pages of the World Wide Web
· Explorer
· Neoplanet
· Firefox
The browser interfaces are relatively similar with most offering the same ( or variant of the same) user tools for searching, navigating and saving snapshots of the World Wide Web.
Back and Forward buttons allow you to navigate to previously viewed web pages in the same web viewing.
Home button takes you back to your internet home page.
History allows you to open previously visited web pages. Internet Explorer will hold three weeks of previously viewed web pages right up to your current session.
Firefox, Mozilla and Explorer 2007 use tabs and bookmarks.
Shortcuts
Ctrl + S – Save
Ctrl + O – Bookmark
Ctrl + P – Print
Ctrl + H – History
Ctrl + F – Find
Ctrl + U – View source
Ctrl + F5 – Refresh
Ctrl + R - Reload
Five things I learnt from the lecture and the tutorial.
1. The internet is a great way to get information
2. You have to look around for informaton, using search engines and directories
3. You have to review your own findings on the internet
4. The information on the internet is not always reliable
5. There is more to the internet then what we see
Tutorial
In this weeks tutorial we had a workshop to complete like every week. We had to look and compare the authencity of two websites.
The two websites were:
http://www.haggishunt.scotsman.com/
http://www.molossia.org/
For my findings I found that http://www.molossia.org/ as the website to appear more authentic, with my findings I had four points as a proof of why we choose this website.
· It’s about an actual Republic
· It gives information about the people, history, government information, culture and media of the town
· They have pictures of the town, land, people, government and houses
· It is a good site to use for research
· And it explains stuff in the Molossia language
After discussing the authencity of the websites, we moved onto predicting what a website contained by looking at the web pages URL.
Four clues that give away each site as being a spoof are:
- misleading information
- hidden URL's
- stay online at all times
- some website are spoofed to find out personal information from you (ie pin numbers, addresses etc)
The URL is: http://www.martinlutherking.org/
My first thought of what the website would be about, was the life of Martin Luther King, the high and low lights of his life, what he did and why he was so famous, and I found that I was almost right in what i thought the web page was about. Martin Luther King fought for equal rights for Black people. It tells us his speeches, about the day they celebrate as a holiday called Martin Luther King Day, which is celebrated on the third Monday of January each year across the United States ( I did some extra searching to find out the day of this holiday using the URL: http://en.wikipedia.org/wiki/Martin_Luther_King_Day) it tells us about the day he was assassinated, also gives us information on Civil Rights and also refers to books about the life of Martin Luther King Jnr.
I think it gives great information of the stories and insights into his life. How he fought for the rights of black people and helped our world become the world we live in today, some of us treat black people the same as they did back then, but most of us have come to treat the black people equally, ewe have accepted how multicultural our world has become.
When he was assassinated he dies fighting for what he believed in, White people didn’t appreciate how much freedom they got in life and they were upset that blacks wanted the same things in life as white people.
Readings
In a brief history of the internet, this reading is about the history of the internet as stated in the title. From the origins of 1962 to the history of the future we can get alot of information out of this reading, ARPANET were the finders of the internet we use today.
http://www.let.leidenuniv.nl/history/ivh/frame_theorie.html is a website in which users can locate infromation regarding the history of the internet including the development of computers, the World Wide Web, History of electronic mail (email), Search Engines and more. Linking off into pages of information each link has more and more to know about the WWW.
Emma
xoxox
