2.
- There are some basic aspects of a URL that we take for
granted:
http://lakota.mcauley.nsw.edu.au:81/
- Forward slashes and dots are used to separate different parts
of a URL
- A URLneverhas spaces in it
- It is mostly made of lower case letters
- Uses both numerals and letters
3.
- URLs are actually made of set of four numbers (an IP address)
such as 202.147.23.8 which are separated by a period. The reason
why people do not normally see this in an URL is because it is not
used as it is difficult for humans to use it and instead they are
represented by alphanumerics, which is much easier to
remember.
- It is the unique address of a page on the internet.
- e.g. Google Australias address:www.google.com.au
- A URL specifies the address of a file.
- URL : Uniform resource LocatorIt is known as uniform because it
is the same throughout the world, and it is a method to locate any
resource such as file or document on the internet.
4.
- URLS are highly important in the world of the Internet as they
act asstreet addressesfor informationon the Internet:
-
http://netforbeginners.about.com/od/understandyourbrowser/a/URLs.htm
: Today, an estimated31 billion web pages and Internet transmitters
are addressed using URL names. URLsare like street addresses or
telephone addresses applied togive an address different web pages
on the Internet.
5.
- By telling the browser what protocol to use and informing the
web server what page the user wants.
- A URL allows a browser to connect to a particular website, in
other words itdirects youto that particular webpage.
- URL determines the particular part of a web site a user
visits:
- http://www.ariadne.ac.uk/ - main page of website
- http://www.ariadne.ac.uk/issue13/ - particular section on the
website
6.
- The actual types of URL include:
- Static URl is a URL that connects the destination without
generating programming scripts.
- Dynamic URL is the URL that uses the programming script to
connect to the destination
- Directory URL is one that does not consist of any file name
that points the default file of the directory.
7. PARTS OF AN URL
- Four main parts. This includes:
8. PROTOCOL
- The protocol is used in communication between a browser and the
web server.
- An URL consist of many different types of protocol depending
what a person is looking for.
- Different types of protocols include:
- And there are many others!
- It is used in communication between a browser and the web
server
9. PROTOCOL TYPES
- is short of hyper text transfer protocol- it helps in how the
messages are formatted and transmitted and provides a standard for
web browsers to communicate.
- This is short for File transfer protocol which allows a person
to transfer files from one computer or server to another. You only
need only need a computer name, user name and password. This is
useful if you have composed a Web page on your computer and want to
upload it.
10.
- It is a protocol where hierarchically-organized text files
could be brought from servers all over the world to a viewer on
your computer. Especially in universities, Gopher was a step toward
the World Wide Web's http
- It is short for Wide Area information server. A database on the
Internet that contains indexes to documents that reside on the
Internet. Using the Z39.50 query language, text files can be
searched based on keywords.
11. SERVER NAME
- Separated from a protocol by a colon and two forward
slashes.
- (put a sample of the URL)
- Server name tells a person about the machine aka the server
that one wants to access
12. DOMAIN NAME
- The domain allows the person to recognise the country in which
the server is based in and the nature of the organisation that owns
the server.
- E.g: from previous URL,it is: .ac.uk- from this we can realise
that it is a academic server because of ac and is in United
Kingdom.
- There are different country identifiers that tell where the
server is based it is always in the end of a URL.
COUNTRY IDENTIFIER IN A URL COUNTRYOF SITES ORIGIN au Australia
ca Canada uk United Kingdom de Germany 13. Continuing domain
name
- The domain name also has an organisation identifier which
usually comes after the country identifier/country code.
-
- Edu/ac-showing it is an academic or educational server.
-
- Co/com- showing a commercial server
-
- Gov-for government server
-
- Org- showing non-governmental, non-profit making
organisations.
14. DIRECTORY AND FILENAME
- Directory is part after the domain name and between another set
of slashes.
- It contains the files you will be accessing.
- Most URLs are in directory structure which can then help tell
something about the site.
- http://www.bps.org.uk/publicat/Periodicals/Psych/PSY9_97.HTM
Here the directories are (publicat, Periodicals
15.
- Provides information on the geographical location of where the
site originated from
- eg:www.google.com.au Australia
- Through looking at the country identifier and organisation
identifier in a URL, one is able to determine the reliability and
accuracy of a website.
- Eg: For someone who is looking for websites onAustralian Blue
Mountains,www.bluemts.com.au/
which is a site based on a skiing resort in Canada not the
Australian KatoombaBlue Mountains.offers reliable and accurate
information compared towww.bluemountain.ca /
- Provides information of the organisation who created the web
page
- eg:www.student.mcauley.nsw.edu.au Educational organisation
16.
- URL: Uniform Resource Locator
- It allows a browser to connect to a website
- It is like a street address for information online.
-
- path (which is divided into 2 parts: directory and file
name)
17.