comped9 module 3 access, communication, and other internet services
TRANSCRIPT
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COMPUTER EDUCATION 9
MODULE 3Access, Communication, and
Other Internet Services
Prepared By: Engr. Jeremy M. Flores
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ACCESS
The Internet and telephone systems are similar. You can connect a computer to the
Internet much like you connect a phone to the
telephone system.
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ACCESS
The most common way to access the Internet is through an Internet
Service Provider (ISP).
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ACCESS
The providers are already connected to the Internet
and provide a path or connection for individuals
to access the Internet.
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ACCESS
The most widely used commercial Internet
Service Providers use telephone lines, cable,
and/or wireless connections.
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ACCESS
Connection Technologies
DSLCable
Wireless Modems
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ACCESS
Browsers are programs that provide access to Web resources. It allows you to
explore, or to surf, the Web by easily moving from
one Website to another.
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ACCESS
Four Well-Known Browsers
Apple SafariGoogle Chrome
Microsoft Internet ExplorerMozilla Firefox
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ACCESS
For browsers to connect to resources, the location or address of the resources must be specified. These
addresses are called Uniform Resource Locators
(URLs).
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ACCESS
Parts of URL
Hypertext Transfer Protocol
Domain Name
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ACCESS
HTTP presents the protocol used to connect to the resource. It is used for Web traffic and is the
most widely used Internet Protocol.
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ACCESS
Domain Name indicates the specific address where the
resource is located. The last part of the Domain Name following the dot (.) is the Top Level Domain (TLD).
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ACCESS
TLD, also known as the Web Suffix, typically identifies the type of organization of the
Website.
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ACCESS
DOMAIN TYPE.com Commercial.edu Educational.gov Government.mil Military.net Network.org Organization
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ACCESS
Once the browser has connected to the Website,
a document file, containing HTML, is sent back to your computer.
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COMMUNICATION
Communication is the most popular Internet activity, and its impact
cannot be overestimated.
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COMMUNICATION
Electronic Mail (E-mail) is the transmission of electronic
messages over the Internet.
Web-Based E-mail AccountsClient-Based E-mail Accounts
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COMMUNICATION
Web-Based E-mail Accounts do not require an E-mail program to be
installed on your computer.
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COMMUNICATION
Once your computer’s browser connects to an E-mail Service Provider, a special program called
Webmail Client is run on the E-mail Service Provider’s
computer to begin E-mailing.
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COMMUNICATION
Client-Based E-mail Accounts require a special program known as an E-
mail Client to be installed on your computer.
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COMMUNICATION
Elements of E-mail
HeaderMessageSignature
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COMMUNICATION
E-mail Header Information
AddressesSubject
Attachments
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COMMUNICATION
Unsolicited or unwelcome E-mail are called SPAM.
Distraction, NuisanceDangerous
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COMMUNICATION
A more efficient approach to control spam has been the development and use of Spam Blockers or Spam
Filters.
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COMMUNICATION
Messaging is another messaging system that the Internet provides.
Text Massaging (SMS)Instant Messaging (IM)
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COMMUNICATION
Text Messaging is the process of sending a short
electronic message, typically less than 160
characters, using a wireless network to another person.
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COMMUNICATION
Instant Messaging allows two or more people to contact each other via
direct, live communication.
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COMMUNICATION
Social Networking is one of the fastest growing and one of the most significant
Web 2.0 applications.
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COMMUNICATION
Social Networking sites focus on connecting
people and organizations that share common interest or activity.
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COMMUNICATION
These sites typically provide wide array of tools that facilitate
meeting, communicating, and sharing.
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COMMUNICATION
Best Known Social Networks
FacebookGoogle+LinkedIn
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COMMUNICATION
Facebook was initially launched by Mark
Zuckerberg at Harvard University for college
students in 2004.
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COMMUNICATION
By 2008, Facebook is the most widely used Social Networking site. It now
has a billion users worldwide.
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COMMUNICATION
Features of Facebook
Instant MessagingPhoto and Video Sharing
Games
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COMMUNICATION
Categories of Facebook Users
IndividualsBusinesses
Communities
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COMMUNICATION
Google Inc. launched Google+ in 2011. it is a combination of some
Google Inc.’s previously existing and new services.
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COMMUNICATION
Google Inc. Services
CirclesHangouts
Sparks
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COMMUNICATION
LinkedIn started in 2003 and has become the
premier business-oriented social networking site.
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COMMUNICATION
LinkedIn provides tools to maintain business contacts, develop extended business
networks, research individual businesses, search
for job opportunities, and more.
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COMMUNICATION
Other Social Networking Sites
BlogsMicroblogs
Webcasts and PodcastsWikis
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COMMUNICATION
Blogs are personal Websites used to keep in
touch with family and friends. Blog posts are
time-stamped and arranged with the newest item first.
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COMMUNICATION
Microblogs publish short sentences that only make a few seconds to write,
rather than long stories or posts like a traditional
blog.
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COMMUNICATION
Webcasts and Podcasts deliver media content
such as music and movies over the Internet to your
computer.
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COMMUNICATION
Webcasts use streaming technology in which audio
and video files are continuously downloaded to
your computer while listening to and/or viewing
the file content.
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COMMUNICATION
Podcasts do not use streaming technology.
Before a podcast can be run, the media files have
to be downloaded and saved to your computer.
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COMMUNICATION
Wikis are Websites specifically designed to
allow visitors to use their browser to add, edit, or
delete the site’s content.
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COMMUNICATION
Wiki comes from the Hawaiian word for FAST,
which describes the simplicity of editing and publishing through Wiki
software.
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COMMUNICATION
Wiki supports collaborative writing in which there is no
single expert author, but rather a community of interested people that
builds knowledge over time.
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SEARCH ENGINES
Search Engines are specialized programs that
assist you in locating information on the Web
and the Internet.
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SEARCH ENGINES
AskBing
GoogleYahoo
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SEARCH ENGINES
Content Evaluation
AuthorityAccuracy
ObjectivityCurrency
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ELECTRONIC COMMERCE
Also known as E-Commerce, it is the
buying and selling of goods over the Internet.
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ELECTRONIC COMMERCE
Advantages
Eliminated Operations Cost
Reduced Inventory
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ELECTRONIC COMMERCE
Disadvantages
Immediate Delivery of GoodsInability to TRY-ON PurchaseSecurity of Online Payments
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CLOUD COMPUTING
Cloud Computing uses the Internet and the Web to
shift many of these computer activities from the user’s computer to other computers on the
Internet.
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CLOUD COMPUTING
Basic Components
ClientsInternet
Service Providers
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CLOUD COMPUTING
Clients are corporations and end users who want
to access data, programs, and storage.
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CLOUD COMPUTING
The Internet provides the connection between the client and the providers.
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CLOUD COMPUTING
Service Providers are the organizations with
computers connected to the Internet that are willing to provide access to software,
data, and storage.
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CLOUD COMPUTING
Efficiency of Cloud Computing
The speed and reliability of the user’s access to the Internet,
and the Internet’s capability to provide safe and reliable transmission or data and
programs.
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WEB UTILITIES
Plug-InsFilters
File Transfer UtilitiesInternet Security Suites
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WEB UTILITIES
Plug-Ins are programs that are automatically
started and operate as a part of your browser.
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WEB UTILITIES
Widely Used Plug-Ins
Adobe Acrobat ReaderAdobe Flash PlayerApple QuickTime
Microsoft Windows Media PlayerRealNetworks / RealPlayer
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WEB UTILITIES
Filters block access to selected Websites. It
allows individuals, as well as organizations, to
restrict selected sites and set time limits.
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WEB UTILITIES
File Transfer Utilities allow you to copy files to your computer from specifically configured
servers (downloading) and to copy files from your computer to another computer on the
Internet (uploading).
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INTERNET SECURITY SUITES
An Internet Security Suite is a collection of utility programs designed to
maintain your security and privacy while you are on
the Web.
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INTERNET SECURITY SUITES
Best Known Security Suites
McAfee’s Internet SecuritySymantec’s Norton Internet
Security