Internet vs Web
Internet
The Internet is a massive network of networks, a networking infrastructure. It connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the Internet does so via a variety of languages known as protocols.
Web
The World Wide Web, or simply Web, is a way of accessing information over the medium of the Internet. It is an information-sharing model that is built on top of the Internet. The Web uses the HTTP protocol, only one of the languages spoken over the Internet, to transmit data. Web services, which use HTTP to allow applications to communicate in order to exchange business logic, use the the Web to share information. The Web also utilizes browsers, such as Internet Explorer or Firefox, to access Web documents called Web pages that are linked to each other via hyperlinks. Web documents also contain graphics, sounds, text and video.
History…..
- Internet was launched in 1969 when the United States funded a project that developed a national computer network called Advanced Research Project Agency Network (ARPANET).
- The Web was introduced in 1991 at the Center for European Nuclear Research (CERN) in Switzerland.
- From this early research beginnings, the Internet and the Web have evolved into one of the most powerful tools of the 21st century.
The internet connects millions of computers and resources throughout the world.
The Web is a multimedia interface to the resources available to the Internet.
Everyday over a billion users from nearly every country in the world use the Internet and the Web.
The most common uses are :
- Communicating ; exchange email, join discussions and debates on a wide variety of special-interest topics.
- Shopping ; one of the fastest-growing Internet applications. Look for shopping, bargains and make-up purchases.
- Searching ; access some of the world’s largest libraries directly from your home computer.
- Entertainment ; find music, movies, magazines, and computer games. Find live concerts, book clubs, and more.
- Education or e-learning ; can take classes on almost any subject.
- Providers
National service provider
by using this user can access through the Internet from anywhere within the country for a standard fee without incurring long-distance telephone charges
wireless service provider
It offer Internet connections for computer with wireless modem and wide array of wireless device.
- Browser
for browser to connect to resources, the location or address of the resources must be specified, called uniform resource locators (URLs)
http://www.fsm.com
http: protocol
fsm.com: domain name
com: top-level domain
Communication.
· E-mail
· Instant messaging
· Social networking
· Blogs, microblogs, and wikis
E-mail
E-mail (electronic mail) is the transmission of electronic messages.
Basic elements of E-mail :
· Header, including
o Addresses
o subject
o attachments
· message
· signature
Spam is unwanted and unsolicited e-mail that may include a computer virus.
Spam blockers are program that identify and eliminate spam.
Instant messaging
Instant messaging (IM) supports live communication with friends.
Universal instant messengers support communication with other services.
Social networking
Social networks connect individuals to one another
Three types of social networking
o Reuniting sites connect people who have lost touch with one another
o Friend-of-a-friend sites bring together two people who share a common friend.
o Common interests or hobbies
 |
myspace
friendster
Blogs, microblogs, and wikis
A web log or blog is an online journal with chronological postings. A microblog publishes short sentences
Twitter is the most popular microblog-ging site. A wiki is a web site that allows people to edit or contribute to it by directly editing the pages
microblogs
blogs
search tools
v AOL Search : search.aol.com
v Ask : http://www.ask.com/
v Google : http://www.google.com/
v MSN Search : search.msn.com
v Yahoo! : http://www.yahoo.com/
Search engines
Locate information on the web. Two approaches are keyword search; ( enter keyword, and it returns a list of hits; good for locating specific information) and directory search ( select from a list of topics; good for locating general information).
Metasearch engines
Submit to several search engines simultaneously. Duplicates sites are eliminated, hits are ordered, and composite hits are presented.
Specialized search engines
Focus on subject-specific web sites.
Content evaluation
Consider the following criteria to evaluate the accuracy of information on the web : authority, accuracy, objectivity, and currency.
web utilities
Utilities are programs that make computing easier. Web utilities are specialized utility programs that make using Internet services for connecting and sharing resources over the Internet. File transfer utilities allow you to copy files to and from your computer across the Internet.
Web-based applications
The most widely used web-based applications are free using Web-based services that provide access to programs that run within your browser window.
For example, Google Apps provides free access to programs with capabilities similar to Microsoft’s Word, excel, and PowerPoint.
Another type is application service provider (asp), to use these, you connect to the Web site of an application service provider (asp), copy the application program to your computer system’s memory, and then run the application.
Plug-ins
Are programs that are automatically started and operate as a part of your browser.
There are many Web sites require you to have 1 or more plug-ins to fully experience their content.
Some widely used plug-ins include :::
- ACROBAT READER from ADOBE
For viewing and printing a variety of standard forms and other documents saved in a special format called PDF.
- WINDOWS MEDIA PLAYER from MICROSOFT
For playing audio files, video files, and much more.
- QuickTime from APPLE
For playing audio and video files.
- RealPlayer from RealNetworks
for playing audio and video files.
- Shockwave from Adobe
For playing Web-based games and viewing concerts and dynamic animations
FILTERS
block access to selected sites. The Internet is an interesting and multifaceted arena. Parents in particular, are concerned about children roaming unrestricted across the Internet.
Filter programs allow parents as well as organizations to block out selected sites and set time limits. Additionally, these programs can monitor use and generate reports detailing the total time spent on the Internet and the time spent at individual Web sites, chat groups, and newsgroup.
FILE TRANSFER UTILITIES
Using these utility software, u can copy files to your computer from specially configured servers. This is called downloading. U can also use file transfer utility software to copy files from your computer to another computer on the Internet. This is called uploading.
3 popular types of files transfer are FTP, Web-based and BitTorrent.
1) File transfer protocol (FTP) and secure file transfer protocol (SFTP)
Allow u to efficiently copy files to and from your computer across the Internet.
Frequently used for uploading changes to a Web site hosted by an Internet service provider.
2) Web-based file transfer service
Make use of a Web browser to upload and download files.
This eliminates the need for any custom software to be installed.
3) BitTorrent
Distributes file transfer across many different computers for more efficient downloads unlike other transfer technologies where a file is copied from one computer on the Internet to another.
A single file might be located on dozens of individual computers. When u download the file, each computer sends u a tiny piece of the larger file, making BitTorrent well-suited for transferring very large files.
Unfortunately, BitTorrent technology often has been used for distributing unauthorized copies of copyright music and video.
internet security
An Internet security suite is a collection of utility programs designed to maintain your security and privacy while you are on the Web.
These programs control spam, protect against computer viruses, provide filters and much more.
Two of the best-known Internet security suites are McAfee’s Internet Security and Symantec’s Norton Internet Security….
A background in computer science, including facility in writing and interpreting programming code, is almost always the fundamental requirement for this field. As computer technology both becomes more pervasive in Financial Services and changes rapidly, skilled IT professionals are increasingly more valuable.
According to an article in the 12/5/09 issue of The Economist ("Silo but deadly"), the financial services industry was on track to spend over $500 billion worldwide on information technology in 2009. This is greater than any other industry, and also exceeds the aggregate spending by all governments on IT.
( from: http://financecareers.about.com/od/informationtechnology/a/infotech.htm)
FSM
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