- Why is is hard to determine how big the Internet is today? Give reasons. I think it is really hard to determine how big the internet is because the internet is so big and it is expanding. Even more, the Internet's users are also increasing.
2. 3-Why are TCP/IP protocols so important to the functioning of the internet? What do they do? TCP and IP are networking protocols that are important to the functionality of the internet because they are basically what the internet is built on.
3. How does the type of Internet connection influence the things you can do on the Internet? The type of Internet connection that one has influences and affects many things one can do on the Internet. For example, an Internet user who uses DSL connection will have a very hard time downloading and viewing photos, attachments, documents, etc. Anything on the Internet that involves the use of images, pictures, ads and more take a while to load and use.
4. 4- How does push technology differ from standard web page delivery techniques? How is it used? Push technology is a style of Internet-based communication where the request for a given transaction is initiated by the publisher or central server. Whereas, standard Web page delivery techniques are where request for the transmission of information is started by the receiver or client.
5. 5- What do email addresses and URLs have in common? Although email addresses and URLs have several differences, there are a few things that they have in common. Such as the fact that they both must be typed correctly and precisely. If there is just one incorrect character, neither will work properly. Also, both email addresses and URLs require the use of internet, otherwise, neither of them has value.
6. 6- Briefly describe several software tools that can be used to develop Web pages. There are several software tools for developing Web pages available nowadays. For example, Firebug is a web development tool that is browser-based and is used for debugging, analyzing, and testing web pages. Another example is the IBM Page Detailer, which is a simple tool that lets one visualize web components as they’re being downloaded. Another example is DBMonster, which is an open-source application that helps users with tune database structures and table indexes, also helps them conduct tests under high database load to determine performance.
7. 7-Why is file compression important on the Internet? File compression is a great capability where files are made to take up less room on a hard disk. On the internet file compression is really helpful. For instance, let's say you have a large amount of files that are on your computer, which you are making available to people on the internet to access and download. With file compression, you can reduce the amount of space each file takes, and in the end, double the size of your hard drive.
8. 8- Define key terms listed in glossary
· application service provider (ASP)- A company that manages and delivers application services on a contract basis.
· application server- A common type of Internet server that stores PC office applications, databases, or other applications and makes them available to client programs that request them.
· broadband connection- An Internet connection such as DSL or cable modem that offers higher bandwidth, and therefore faster transmission speed, than standard modem connections.
· cable modems- A type of broadband Internet connection that uses the same network of coaxial cables that delivers TV signals.
· Cookie- Small files deposited on a user’s hard disk by Web sites, enabling sites to remember what they know about their visitors between sessions.
· Cyberspace- A term used to describe the Internet and other online networks, especially the artificial realities and virtual communities that form on them. First coined by William Gibson in his novel, Neuromancer.
· data-driven- Web site A Web site that can display dynamic, changeable content without having constantly redesigned pages, due to an evolving database that separates the site’s content from its design.
· digital cash- A system for purchasing goods and services on the Internet without using credit cards.
· digital divide- A term that describes the divide between the people who do and do not have access to the Internet.
· dynamic HTML- A relatively new version of HTML that supports formatting and layout features that aren’t supported in standard HTML.
· email server- A specialized server that acts like a local post office for a particular Internet host.
· XM- a simplified version of SGML that can be used, especially on the world Wide web, to create a tagging scheme that allows elements of a document to be marked according to their content rather than their format.
· file server- In a LAN, a computer used as a storehouse for software and data that are shared by several users.
· file transfer protocol (FTP)- A communications protocol that enables users to download files from remote servers to their computers and to upload files they want to share from their computers to these archives.
· filtering software- Software that, for the most part, keeps offensive and otherwise inappropriate Web content from being viewed by children, on-duty workers, and others.
· grid computing- A form of distributed computing in which not files, but processing power is shared between networked computers.
· Hypertext- An interactive cross-referenced system that allows textual information to be linked in nonsequential ways. A hypertext document contains links that lead quickly to other parts of the document or to related documents.
· Internet2- An alternative Internet-style network that provides faster network communications for universities and research institutions.
· Internet service provider (ISP)- A business that provides its customers with connections to the Internet along with other services.
· Internetworking- Connecting different types of networks and computer systems.
· Java A- platform-neutral, object-oriented programming language developed by Sun Microsystems for use on multiplatform networks.
· JavaScript- An interpreted scripting language, similar to but otherwise unrelated to Java, that enables Web page designers to add scripts to HTML code.
· narrowband connections -Dial-up Internet connections; named because they don’t offer much bandwidth when compared to other types of connections.
· National Information Infrastructure -A state-of-the-art command center created to fight the growing threat of system sabotage. The center includes representatives of various intelligence agencies (the departments of defense, transportation, energy, and treasury), and representatives of several major corporations.
· open standards Standards not owned by any company.
· packet-switching- -The standard technique used to send information over the Internet. A message is broken into packets that travel independently from network to network toward their common destination, where they are reunited.
· plug-in -A software extension that adds new features.
· portal -A Web site designed as a Web entry station, offering quick and easy access to a variety of services.
· pull technology- Technology in which browsers on client computers pull information from server machines. The browser needs to initiate a request before any information is delivered.
· push technology- Technology in which information is delivered automatically to a client computer. The user subscribes to a service and the server delivers that information periodically and unobtrusively. Contrast with pull technology.
· RSS (Really Simple Syndication)- An XML-based format for sharing data with aggregators, commonly used by bloggers.
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