Building Blocks of Information Technologies

They have revolutionized the world today because of higher-volume data processing, and higher acceleration of data transmission. Several of the immediate advantages of IT to people are: being able to view information over the Net which has been submitted by an user a lot of miles away, and having the ability to perform computations of great complexity within milliseconds. fusionex founder

The following are some aspects of important technologies that comprise our IT world.

Networks:
There are two important types of sites, LAN and WAN. LOCAL AREA NETWORK connects all computers within a 5 meter radius, and WAN connects all computers across the WORLD by transmitting through dish receivers. The data which get transmitted across a WAN or a LOCAL AREA NETWORK are packet data, and the transmission technology is called Packet Switching Technology. The protocol used for Transmission is called TCP/ IP 

Internet:
Internet is made of foundation classes of Packet Transmission provided by WAN. While e-mail technology just carries the data more than a network, Internet will more than this by storing data entered by the users in a database or XML format, and providing the data at the instance to the user in a browser by using a Search Engine.

For the user goes in an URL in a browser such as WEB BROWSER (or other browsers such as Mozilla, Netscape and many others. ), the request is sent to the internet machine. The Web Server is a machine which retains the files that have to be transmitted to the web browser. The files are stored in a virtual real estate of the web machine such as Internet Details Server (Microsoft) or TomCat (Sun).

Different technologies provide for web-site building. The popular ones are Microsofts’ Active Server Pages, APPEAR IN NET and Sun Microsystems Java. When the web-server encounters an URL, it sends the page expected to the browser. Pertaining to experimental purposes, if you just type an WEB ADDRESS address and go to View/ Source in your browser, you can see scripting which is employed to compose the page. The scripting would contain an HTML section (used for formatting the page) and a scripting section which fetches data from the server. For example, when it comes to displaying data from a database, the database will not be present in the users’ machine, but be present in the web server. The request for transmitting this data to the browser is delivered by the scripting part which uses SQL as well as ODBC/ ADO to eliminate the data to the browser. XML is yet another popular medium for transmitting and storing datakept in a remote location.

E-Mail Technology:
An e mail works on the building blocks classes of File Transfer and Remote Login such as Telnet. An e-mail customer such as Hotmail uses services such as SMTP and POP to send and receive e-mails. SMTP is a protocol used for sending e-mail data. SMTP is wrapped around Telnet and invokes opening 25 of a computer to transmit packet data. In fact, SMTP and POP services were known in academia since eighties, but Hotmail became a commercial success in the mid 90s due to demand for the Internet and the public utilization of the Internet.

Application Technology:
A credit application can be stand-alone and work only on a PC, or can work in a hardware – client mode, or on an Internet function. An application is character- or GUI-based and provides a good presentation coating for an user to view information or get into data. A client – server application keeps merely one copy of the software in, say, binary format in the server computer. Many users can simultaneously use the same program from a client computer. A client just provides a copy of the applying to the user.

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