INTERNET

This topic I think was the most interesting one for everybody, because nowadays we all stick to the Internet and I think it was interesting for everybody to know about the internet. On October 24, 1995, the FNC unanimously passed a resolution defining the term Internet. First let me tell you the history of the internet. 

Mid 1960:            Papers on “Packet Switching” emerge.

End 1969s:           ARPA sponsors the development of a packet-switching network, called the ARPANET.          First four nodes are UCLA, SRI, U. Utah, UCSB.

 1974:    The TCP/IP protocols and model are being proposed by Cerf/Kahn.

1980:     IPv4 is introduced

1983:     ARPANET adopts TCP/IP. At this time, the ARPANET has 200 routers.

1984:     NSF funds a TCP/IP based backbone network. This          backbone grows into the NSFNET, which becomes the successor of the ARPANET.

1995:     NSF stops funding of NSFNET. The Internet is completely commercial.

Now let me give you general information of internet. 

• It is the largest network in the world that connects hundreds of thousands of individual networks all over the world.
• The popular term for the Internet is the “information highway”.
• Rather than moving through geographical space, it moves your ideas and information through cyberspace – the space of electronic movement of ideas and information.
•  No one owns it
• It has no formal management organization.
• As it was originally developed by the Department of defense, this lack of centralization made it less vulnerable to wartime or terrorist attacks.
• To access the Internet, an existing network need to pay a small registration fee and agree to certain standards based on the TCP/IP (Transmission Control Protocol/Internet Protocol) .

We use internet for different things such as: 

• Send e-mail messages.
• Send (upload) or receive (down load) files between computers.
• Participate in discussion groups, such as mailing lists and newsgroups.
• Surfing the web.

Nowadays almost everyone has an internet at his home or at least phone, and it has 7 underlying technologies. 

OSI (Open System Interconnection) Model consists of 7 layers:

1.     Layer 1 (Physical): hardware

2.     Layer 2 (Data Link): handling errors of layer 1, flow control, synchronisation

3.     Layer 3 (Network): switching and routing, logical paths, virtual circuits

4.     Layer 4 (Transport): end-to-end system services, ensures complete data transfer

5.     Layer 5 (Session): connections between applications

6.     Layer 6 (Presentation): independence from difference in representation (syntax layer)

7.     Layer 7 (Application): end user processes (telnet, ftp)

We use different browsers to enter to the internet, they have developed a lot and nowadays we mostly use Google chrome which I'm using right now :D

In the second session our lecturer has taught us about the connections of the internet 

There are three ways of connection to the internet.

1. LAN servers

Local servers can provide access to the Internet through normal connections (e.g., Ethernet)

2. Serial line internet protocol (SLIP) and Point-to-point protocol (PPP)

Communications protocol software that transmits packets over telephone lines, allowing dial-up access to the Internet

3. Connection via an on-line service provider (ISP)

Examples are America Online and Microsoft Network. These services usually require sign-up procedures

 And as we all know there are URL which is one of the most important things in the internet

• The IP address and the domain name each identify a particular computer on the Internet.
• However, they do not indicate where a Web page’s HTML document resides on that computer.
• To identify a Web pages exact location, Web browsers rely on Uniform Resource Locator (URL).
• URL  is a four-part addressing scheme that tells the  Web browser:

- What transfer protocol to use for transporting the file

- The domain name of the computer on which the file resides

- The pathname of the folder or directory on the computer on which the file resides

- The name of the file 

The another important thing which we have learnt was the Internet safety

Usernames & Passwords

• When you register with different sites, you will generally pick a username and a password.
• Write down the site name, username, and password and keep the information in a safe place (NOT on your computer).
• Get in the habit of doing this each time you register with any site.
• This way if something happens to your computer, you still have the information.
• Protect your password information, since most people use the same password in a lot of places.  If someone knows your password for one site, they might be able to use it to get at more personal information at another site.

And in the class we have discussed about a lot of things such as Phishing, Websites and Web designers and lecturer has told us a lot of useful but boring things. But I have learnt a lot of news things for myself and I hope they will be useful in my future life as other subjects thus I'm studying this subject with my all patience ;D

Penulis : Unknown ~ Sebuah blog yang menyediakan berbagai macam informasi

Artikel INTERNET ini dipublish oleh Unknown pada hari Saturday, 6 April 2013. Semoga artikel ini dapat bermanfaat.Terimakasih atas kunjungan Anda silahkan tinggalkan komentar.sudah ada 0 komentar: di postingan INTERNET