Summary for Chapter 2

In this chapter, there are 6 subtopics; internet and webs, access, communication, search tools, electronic commerce and web utilities.

In internet and web subtopic, we can know a little bit about the history of internet and web. The internet was launched in 1969 with APARNET, the internet consists of the actual physical network made up wires, cables, and satellites. The web was introduced in 1992 at CERN, the web provides a multimedia interface to internet sources. The most common uses of the internet and web include: communication, shopping, searching, entertainment and education.

In access subtopics, there are 2 subtopics; providers and browsers. The internet service providers are connected to the internet. The most widely used ISPs are national and wireless. Connection technologies include dial-up, DSL, cable and wireless modems. Browsers access the web allowing you to surf or explore. Some related items are
• URLs – locations or addresses to web resources
• HTML – commands to display web pages hyperlinks are connections
• Applets – special programs linked to web pages.

In communication subtopics, there are 3 subtopics; e-mail, instant messaging and social networking. E-mail ( electronic mail )is the transmission of electronic messages. Instant messaging ( IM ) extends e-mail to support live communication with friends. Social networking individuals to one another. Three types are;
• Reuniting sites
• Friend – of – a – friend sites
• Common interest sites

In search tools subtopics, there are 4 subtopics; search engines, metasearch engines, specialized search engines and content evaluation. Search engines locates information on the web. Metasearch engines submit to several search engines simultaneously. Specialized search engines focus on subject- specific web sites. Content evaluation consider the following;
• Authority
• Accuracy
• Objectivity
• Currency

Electronic commerce ( e-commerce ) is the buying and selling of goods over the
internet. Three basic types of e-commerce are:
• Business to consumer
• Business to business – online banking, online stock trading and online shopping
• Consumer to consumer – auction house sites and person – to – person auction sites.
Security is the greatest challenge for e-commerce development. Three basic payment are check, credit card and digital cash.

Web utilities are specialized utility programs that make using the internet and the web easier and safer. Web based applications free users from owning and storing applications. FTP ( file transfer protocol ) is an internet standard for transferring
Files. Plug – ins are automatically loaded and operate as part of browser. Filters are used by parents and organizations to block certain sites and to monitor use of the internet and the web. Internet security suite is a collection of utility programs designed to protect your privacy and the security on the internet.