Saturday, January 31, 2009


· The internet and the Web
Internet launched in 1969 with ARPANET. Internet is a large network that connects together smaller networks all over the glob. It consists of the actual physical network made up of wires, cables and satellites.

Web introduced in 1992 at the CERN in Switzerland. It is a multimedia interface to the resources available on the Internet. Internet was all text, so the Web made it possible to include graphics, animations, sounds or video.

· The common uses
- Communicating
- Shopping
- Searching
- Entertainment
- Education

· Access
The most common way to access the internet is through an Internet service provider (ISP). The most widely used commercial ISP is:

Provide access through telephone or cables lines. Access internet from almost anywhere within country for standard fee without incurring long-distance telephone charges.

Not use telephone or cable lines. Internet connection for computer with wireless modems and a wide array of wireless devices.

Connection technologies include dial-up, DSL, cable and wireless modems.

· Browser
Allow to explore the web easily involving from one Web site to another. 3 well-known browsers:
- Mozilla firefox
- Nestcape communication
- Microsoft internet explorer

Some related term are,

URL’s- location or addresses to web resources, 2 parts of URLs are protocol and domain home, top-level domain (TLD) identifies type of organization.

HTML- displays document as a WebPages. Hyperlinks connect to other documents containing related information.

APPLETS- special programs that are typically written in Java.

· Communication
E-mail(electronic mail), transmission of electronic messages. 2 most widely used e-mail programs are Microsoft’s Outlook Express and Mozilla Thunderbird.
Typical e-mail message has 3 basic elements; header, message and signature.

- Header: appears first and includes addresses, subjects and attachments
- Message: short and to the point
- Signature: additional information about the sender

Spam is an unwanted and unsolicited e-mails may include computer virus. Spamblockers are programs that identify and eliminate Spam.

Instant messaging(IM) is an extension of e-mail allows two or more people to contact each other via direct, live communication. Most widely used IM are AOL’s IM, Microsoft’s MSN Messenger and Yahoo Messenger. One limitation is that many instant messaging services do not support communication with other services and to overcome this limitation universal instant messenger programs are created.

Social networking is connecting individuals to one another.
3 basic categories of social networking:
- Reuniting: connect people who have known one another but have lost touch.
- Friend-of-a-friend: bring together two people who do not know one another but share common friend.
- Common interest sites: bring together individuals that share common interest or hobbies.
· Search tools
Search engines: specialized programs assist you in locating information on web and internet. Provides 2 different search approaches:
- Key words search: enter a keyword reflecting the information that you want.
- Directory search: select a category that fits the information that you want.

Metasearch engines: programs that automatically submit your search request to several search engines simultaneously. Metasearch engines receives results, eliminate duplicates, order the hits and provide the edited list to you.

Specialized search engines focus on subject-specific web sites. Potentially save you time by narrowing your search.

4 considerations for evaluating Web site content:
- Authority
- Accuracy
- Objectivity
- Currency

· Electronic commerce(e-commerce)
Buying and selling of goods over the internet. E-commerce provide incentives for both buyers and sellers.

3 basic types of e-commerce:
- Business-to-consumer(B2C)
The fastest growing type of e-commerce. Nearly, every existing corporation in US provides some type of B2C are for online banking, online stock trading and online shopping.

- Consumer-to-consumer e-commerce
Growing popularity of web auctions.2 basic type of web auction site are auction house sites and person-to-person auction sites.

- Security
Single greatest challenge for e-commerce is the development fast, secure and reliable payment methods for purchased goods. 3 basic payment options are check, credit card and digital cash.

· Web utilities
Specialized utilities programs that make using the internet and the Web easier and safer. Typically, applications web-based are owned by individuals and stored by their computer system’s hard disk. to use one of these web-based applications, accessed from a web site, copied the user’s computer memory, and run.

FTP is internet standard for transferring files. The files that is transfer from another computer is called downloading. Copying files from your computer to another computer on the internet by using FTP is called uploading.

Plug-ins are programs that are automatically started and operate as a part of your browser. Many Web site require you to have one or more plug-ins to fully experience their content. Some plug-ins are included in many of today’s browsers, others must be installed.

Filters block access to selected sites. These programs allows parents and organization to block out selected sites and sets time limits.

Internet security suites is collection of utility programs designed to maintain your security and privacy while you are on the web. 2 of the best-known internet security suites are Mc Afee’s Internet security and Symantec’s Norton Internet security.


Dan said...

Wireless is going to be the wave of the future in regards to everything mentioned in this article. It offers a certain freedom that other internet services do not. Having said that, if you live in the Portland, Oregon area and are thinking about pursuing a wireless internet service give Clear a look.

malik said...

quite a good entry. make sure u really understand this as we will have quiz + test after ur midterm break! **cheers** ;P

*someone from overseas commented to ur entry (above) - promoting the wireless service.. haha

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