Wednesday 7 September 2016

Chapter 2

                                                                Chapter2



Objectives Overview :

- Discuss the evolution of the internet
- Identify and briefly describe
- Describe the type of internet
- Describe the relationship between IP address and domain name
- Explain the purpose of a web browser and identify components a web address
- Describe how to use a search engine to search for information of the web and differentiate between a search engine and a subject directory.
- Describe the types of web sites
- Explain how web pages use graphic, animation, audio, video, virtual, reality, and plugins
- Identify and briefly describe the steps required for web publishing
- Describe the types of e-commerce
- Explain how e-mail, mailing lists, instant messaging, chat rooms, VoIP, newsgroups and message boards, and FTP work
- Identify the rules of etiquette

The internet :

- The internet is the global system interconnected computer network s that use the internet protocol suite to link billions of devices worldwide.
- The first internet was created towards the year 1969 with two main goals. Firstly connecting all the scientists to work together and share information, secondly function even if part of the network were disabled or destroyed by a disaster.
     .1969 Arpanet becomes functional
      .1984 Arpanet has more than 1000 individual computers linked a hosts
      .1986 NSF connects NSF net to Arpanet and becomes known as the internet
      .1995 NSF net terminates its network on the internet and resumes status as research network
      .1996 internet 2 is founded
      .Today than 550 million hosts connect to the internet
- Internet 2 is the most used because of its high-speed private network such as:
                      . cable internet
                      . DSL
                          . FTTP
                          . Fixed wireless
                          . Cellular radio network
                          . Wi-Fi
                          . Satellite internet service
Access Provider :
An access provider is a business that provides individual and organization access to the internet free or for a free.
 IP address : a unique string of numbers separated by periods that identifies each computer using the Internet Protocol to communicate over a network
 Domain name : the part of a network address that identifies it as belonging to a particular domain
 DNS server : The Internet's system for converting alphabetic names into numeric IP addresses.

Examples of generic top-level domains :
                             aero          Into
                             biz            Jobs
                             cat            Mil
                             com          Mobile
                             coop         Museum  
                             Edu          Name
                             Gov          Net
                             Org          Pro
                             Tel           Travel
The World Wide
-The world wide web: an information system on the Internet that allows documents to be connected to other documents by hypertext links, enabling the user to search for information by moving from one document to another. Its a page that provide links and can be downloading. And has a page called URL, and then let say tabbed browing allow user to open many pages in a single web browser window. World wide web has two types of research which are search engine and subject directory. ex: MSN, google and blind etc... search operators can help to refine  the search. The media is referring to any applications that combines the text with : graphics, and animation show as only image etc...
        . search engine is helpful in locating items ex: video(consist of image displayed in motion), Maps ,audio(music etc...) , and blog , virtual reality (
the computer-generated simulation of a three-dimensional image or environment that can be interacted with in a seemingly real or physical way by a person using special electronic equipment
)
        . A graphic is a representation of non text information (GIF, JPEG etc...).
        -. streaming is the process of transferring data in a continuous and even flow.
        . Plug-in is a program that extends the capability of web browser.
- Web site is a location connected to the Internet that maintains one or more pages on the World Wide Web. ex: portal, news , an wiki etc...
- Web server  is a program that uses HTTP.
- Web 2.0: the second stage of development of the World Wide Web, characterized especially by the change from static web pages to dynamic or user-generated content and the growth of social media.
- Web brown is an application program  that provides a way to look at and interact with all the information on the world wide web. ex: google, safari etc...some can contain an instant search box to elimante the steps of displaying.
- Web publishing is the process of publishing original content on the internet and has 5 steps:
                       . Plan a web site
                       . Analyze and plan a web site
                       . Create a web site
                       . Deploy a web site
                       . Maintain a web site.
- E-commerce is a commercial transactions conducted electronically on the Internet and it works as a trianle : B2C ,C2C, B2B.
Other Internet Services
-E-mail is the messages distributed by electronic means from one computer user to one or more recipients via a network.
-E-mail program allows as to create ,send , forward, store , print, and delete an e-mail messages.
- Mailing is a group of email names and addresses given single name :
                      .subscribing adds you email name and address.
                      .unsubscribing remove your name.
- Chat is a real-time conversation that takes on a computer or others such as phone
- Chat room is an area on the Internet or other computer network where users can communicate, typically limiting communication to a particular topic.
- VoIP is an IP telephony term for a set of facilities used to manage the delivery of voice information over the Internet.
-Newsgroup  is a forum on the Usenet service for the discussion of a particular topic.
- Message board is an Internet site where people can post and read messages, usually on a specific topic or area of interest.is a standard network protocol used to transfer computer files between a client and server on a computer network
- FPT is a standard network protocol used to transfer computer files between a client and server on a computer network.
- Netiquette is the correct or acceptable way of communicating on the Internet.

                                                                            end .




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