audio, graphics, and video) using hypertext links. d. Define and describe VoIP and virtual private networks and explain how they provide value to businesses. VoIP is the transmission of voice communication using the internet instead of telephone lines. This allows a company to use its existing internet service as a phone service, saving on costly long distance charges. Also, a company no longer has to maintain separate networks or provide support services and personnel for each different type of network. A VPN is a secure, encrypted, private network that has been configured within a public network to take advantage of the economies of scale and management facilities of large networks, such as the Internet. VPNs give companies the ability to transfer sensitive data across the internet without the risk of outsiders seeing it. The cost is also much less than non-internet based network security. e. List and describe alternative ways of locating information on the Web. • Search Engines: Web services that perform the task of sifting through millions of websites to find the ones that best suit the search criteria. (Google, Yahoo!) • Intelligent Agent Shopping Bots: Assist in filtering and retrieving information about products of interest, evaluating competing products according to criteria the users have established, and negotiating with vendors for price and delivery terms. (MySimon, Google Product Search) • Blog: A personal Web site that typically contains a series of chronological entries by its author, and links to related Web pages. • RSS: Rich Site Summary or Really Simple Syndication, syndicates Web site content so that it can be used in another setting by pulling specified content from Web sites and feeding it automatically to users’ computers, where it can be stored for later viewing. • Wiki: A collaborative Web site where visitors can add, delete, or modify content on the site, including the work of previous authors.
• Social Networking: Highly interactive websites that offer real-time user control, rely on user-generated content, and are broadly based on social participation and sharing of content and opinions. f. Compare Web 2.0 and Web 3.0. Web 2.0 is the second-generation of the Web, enabling people to collaborate, share information, and create new services and content online. Cloud computing, software mashups, widgets, blogs, RSS, wikis, and social networks are some of the features of Web 2.0. Some of these applications run on the web itself instead of the desktop.
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