Tutorial 2

The Internet is a global system of interconnectedcomputer networks that use the standard Internet protocol suite (TCP/IP) to serve several billion users worldwide. 

Benefits of internet:
-Communication
-Accessing and sharing information
-Online banking

Web Application VS Web Services

A web service:

• A programmable application component accessible via standard Web protocols
• The center of the .NET architecture
• Exposes functionality over the Web
• Built on existing and emerging standards (HTTP, XML, SOAP, UDDI, WSDL)

A web application:

• Typically returns HTML or image data or similar
• The results you get from a web application is usually shown to a person, through a web browser

As for similarities:

• Both typically use HTTP(S) as the transport
• Both typically use HTTP authentication/authorization to secure data
• Both are typically hosted by a web server

Transport Control Protocol/Internet Protocol (TCP/IP)

-Rules for information exchange between computers over a network

-'Packet' based : segment/de-segment information

-Client-Server (Request/Response)

     -Web browser (client), Website (server)

-TCP : handles data part

-IP : handles address part (identification of every computer on the Internet)