week 2
Let us look over the areas of How the internet works, previously in our last sessio we looked over the
beginnings of the web and how these are credited to Sir Tim Burners-Lee, however the technology that is used to
enable the web to work are a little more widespread.
In order to access the internet as we use it, there are a number of services that we require, these are as follows;
ISP's or Internet Service Providers
When we access the internet we tend to simply click on the internet browser of our choice (Internet Explorer, Chrome, Safari, e.t.c) and straight away we find ourselves at the home page of our choice or the default of the browser (in most cases a search engine). But wait! how have we got on to the internet, we all as users must have a subscription to the internet, in most cases these are sold as packages some as bundles these are provided by a number of providers, some well known ones are, Sky, BT and Virgin however these are not limited to the larger company's, you may purchase a subscription from third partys like, Talk Talk, Plusnet and many others.
web hosting services
Once signed up with an ISP some provide users with a small area of web space that they can create a simple website to display to the world. However if users wish to create larger sites that have a large number of people visit the site across different times then you may need to pay for a dedicated "Web Host". These host use servers that have a large data storage that is divided up for its clients place thier websites these servers are usually located in vast server farms that are huge air conditioned rooms.
http://buckitmedia.com/wp-content/uploads/2015/02/server-farm.jpg
The company's that offer this space will offer packages that enable users to have the space that they require to host thier sites, and then there are packages that allow users to use the space and sell a share of the remaining space to others and this is called a reseller package.
These packages can be inexpensive and very expensive. Below are some packages that are available.
domain structure
Domain structures can be broken down into what are known as levels of domains, for instance a top-level domains (TLD) or first-level domains and then the next level being a sub-Level domains (SLD). The most common TLDs are .com, .info, .org and .net. A TLD is also sometimes represented as a country code such as .co.uk, .ei and .fr. SLDs are domains that are created in order to connect a related page to the main website. These SLDs are subdivisions of a TLD that represent the specific product, service, organization or business. They direct someone to a specific part of an existing website and eliminate the need to register a completely separate domain, for example, mail.youcollege.ac.uk.
In the United Kingdom, the third-level domain names are standard and branch off from the second-level domains. For example:- .ac.uk - academic (tertiary education, further education colleges and research establishments) and learned societies
- .co.uk - general use (usually commercial)
- .gov.uk - government (central and local)
- .judiciary.uk - courts (to be introduced in the near future)[2]
- .ltd.uk - limited companies
- .me.uk - general use (usually personal)
- .mod.uk - Ministry of Defence and HM Forces public sites
- .net.uk - ISPs and network companies (unlike .net, use is restricted to these users)
- .nhs.uk - National Health Service institutions
- .nic.uk - network use only (Nominet UK)
- .org.uk - general use (usually for non-profit organisations)
- .parliament.uk - parliamentary use (only for the UK Parliament and the Scottish Parliament)
- .plc.uk - public limited companies
- .police.uk - police forces
- .sch.uk - Local Education Authorities, schools, primary and secondary education, community education
http://www.makemyownwebpage.com/sites/default/files/domainname.gifDomain Name Registrars
A domain name registrar is a company or an organization that manages the reservation of Internet domain names. A domain name registrar must be accredited by a generic top-level domain (gTLD) registry and/or a country code top-level domain (ccTLD) registry.
There are a number of these to be found across the internet and some of the prices of the domains can be changable dependant on the extension, for example a .com address may be 3 time the price of a .co.uk address.
Company's that offer these services also in most cases offer users the ability to purchase web hosing space at the same time as purchasing the domain name. In some instances this may be at a reduced rate as this is part of a bulk transaction.
The biggest domain name registry in the UK, responsible for the .uk, .cymru, and .wales top-level domains is a company called, Nominet
Worldwide Web
The best way to understand is by following this
In order to use the internet there are a number of physical devices or hardware required. We all have some understanding to parts of the required hardware, however we will be going over this as a complete system.
Factoid:
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Getting in to 5 groups create an informaiton presentation to assist your class mates, you group will be appointed one of the following
•Group 1 -
•Group 2 -
•Group 3 -
•Group 4 -
•Group 5 -
The information covered in this page covers the knowledge and understanding linked to the criterion in the table below.
| Links to Assessment Criteria | Description |
|---|---|
| P1 | outline the web architecture and components which enable internet and web functionality | M1 | explain the role of web architecture in website communications | D1 | explain the role of the TCP/IP protocol and how it links to application layer protocols |
| Functional Skills English | Reading, Writing, Comprhension, Problems Solving, Nouns |
| Functional Skills Maths | Compression,Reduction |
| British Values | None covered in this session. |
| Equality and Diversity |
Last Updated
2018-04-16 13:27:00
Links to Learning Outcomes |
Links to Assessment criteria |
|
|---|---|---|
English
0Maths
How 2's Coverage
00
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