IT Help

B&W · 2 Oct 2011 at 12:55

Produce a brief outline the web architecture and components which enable internet and web functionality. The outline should be a diagram or flowchart with the various stages and processes that information must pass through to get from server to screen.

im not sure on what to do on this question and i am stuck, can someone give me a hand or point me in the right direction

thanks

steve-h · 2 Oct 2011 at 12:59

Are they asking what stages are used in sending a client a webpage from a server?

I could never understand exactly what those style of questions were asking...

rexehuk · 2 Oct 2011 at 12:59

Depends how detailed you'd want to go?

COMPUTER > SEND REQUEST > NIC > MODEM/ROUTER > ISP > TARGET SERVER > PROCESS REQUEST then back flow?

What university module is this for?

B&W · 2 Oct 2011 at 13:00

steve-h said:
Are they asking what stages are used in sending a client a webpage from a server?

I could never understand exactly what those style of questions were asking...

Ye there asking whats the process between loading up a web page the full process who the ip contacts, what the web host does etc........

radderfire · 2 Oct 2011 at 13:03

Very quickly then ...

Some history first, web grew out of ARPA net:

http://en.wikipedia.org/wiki/ARPANET

Guy credited with inventing the World Wide Web is Tim Berners Lee, he implemented the HTTP protocol:

http://en.wikipedia.org/wiki/Tim_Berners-Lee

Important standards are TCP/IP networks. IP address system. IPv4, now going to IPv6.

Need an addressable system, so DNS system, DNS servers and domain names:

http://en.wikipedia.org/wiki/Domain_Name_System

Hope this helps a bit ...

Rgds

radderfire · 2 Oct 2011 at 13:04

DNS system controls translation between domain names and IP addresses, i.e. human understandable names and machine understandable IP numbers.

Rgds

steve-h · 2 Oct 2011 at 13:04

client types domain name in le browser -> request to dns servers -> dns returns ip of domain name -> you open that ip on port 80 and the web page's code gets sent to you after you send a request -> browser paints you a pretty picture

rexehuk · 2 Oct 2011 at 13:08

Probably wrong... but hey that's my interpretation of it.

The question doesn't specify a type of infrastructure you're operating from... so I've just assumed a simple home setup. Can't be assed to tidy up the diagram

. The reply would then be routed back to the host machine via a packet header I believe which is sent with the original data.

Please correct me if I'm wrong.

This may lay it out better...

Send 401 might not need to be there tbh.. cause it would all come back as part of the request.