1 / 9

Review of Chapter 2

Review of Chapter 2. Important concepts The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals Many home and small business users connect to the Internet via high-speed broadband Internet service

amie
Download Presentation

Review of Chapter 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Review of Chapter 2

  2. Important concepts • The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals • Many home and small business users connect to the Internet via high-speed broadband Internet service • Cable Internet service: through cable television network • DSL: using regular copper telephone line • Dial-up: using standard telephone lines • Fiber to the Premises (FTTP): through fiber-optic cable • Fixed wireless: using dish-shaped antenna to send signals • Cellular Radio Network: using cell phone wireless modems • Wi-Fi: using radio signals • Satellite Internet Service: via satellite

  3. Important concepts • An access provider is a business that provides individuals and organizations access to the Internet free or for a fee • ISP: Provide access to the internet • OSP: Provide access to the internet AND some member-only features • Wireless internet service provider: Provide wireless access to the internet • A web browser allows users to access Web pages and Web 2.0 programs. • Components of a web page • Link(Hyperlink): build-in connection to other web page or part of the web page • URL(Uniform Resource locator): Consists of a protocol, domain name, path to the web page or web application

  4. Important concepts • Practice • Figure out the protocol, domain name and path to the web page in following url: • http://www.foobar.com/foobar/foobar.html • Use search engine • Search engine: Finds information related to a specific topic • Subject directory: Classifies Web pages in an organized set of categories

  5. Important concepts • Types of web sites • Blog: informal web site consist of time-stamped articles , or posts ,in a diary or journey format. • Wiki: Collaborative web site that allows users to create , modify or delete the web site content via their browser • Online social network: Encourage users to share their ideas or life experiences to other users. • Web application: web site allows users to access and interact with software through web browser or any computers or devices that connected to a network

  6. Important concepts • Multimedia • A graphic is a digital representation of nontext information • BMP, GIF, JPEG, PNG, and TIFF • Animation is the appearance of motion created by displaying a series of still images in sequence • Audio includes music, speech, or any other sound Compressed to reduce file size • Streaming is the process of transferring data in a continuous and even flow • Video consists of images displayed in motion • Virtual reality (VR) is the use of computers to simulate a real or imagined environment that appears as a three-dimensional space • A plug-in is a program that extends the capability of a Web browser

  7. Important concepts • E-commerce is a business transaction that occurs over an electronic network • Business-to-consumer (B2C) • Example: Apple application market, Steam, Amazon • Business-to-business (B2B) • Online transactions between visa and amazon.com • Consumer-to-consumer (C2C) • ebay

  8. Important concepts • A mailing list is a group of e-mail names and addresses given a single name • Subscribing adds your e-mail name and address • Unsubscribing removes your name • Instant messaging (IM) is a real-time Internet communications service • A chat is a real-time typed conversation that takes place on a computer • A chat room is a location on an Internet server that permits users to chat with each other • VoIP (Voice over IP) enables users to speak to other users over the Internet • A newsgroup is an online area in which users have written discussions about a particular subject • A message board is a Web-based type of discussion group • FTP (File Transfer Protocol) is an Internet standard that permits file uploading and downloading with other computers on the Internet • An FTP server is a computer that allows users to upload and/or download files using FTP

  9. IP address • An IP address is a number that uniquely identifies each computer or device connected to the Internet • The format of IPv4 address (Class A, Class B, Class C) • A domain name is the text version of an IP address • Top-level domain (TLD) • A DNS server translates the domain name into its associated IP address

More Related