COMPUTER EDUCATION 9

MODULE 3Access, Communication, and

Other Internet Services

Prepared By: Engr. Jeremy M. Flores

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.

ACCESS

The most common way to access the Internet is through an Internet

Service Provider (ISP).

ACCESS

The providers are already connected to the Internet

and provide a path or connection for individuals

to access the Internet.

ACCESS

The most widely used commercial Internet

Service Providers use telephone lines, cable,

and/or wireless connections.

ACCESS

Connection Technologies

DSLCable

Wireless Modems

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.

ACCESS

Four Well-Known Browsers

Apple SafariGoogle Chrome

Microsoft Internet ExplorerMozilla Firefox

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).

ACCESS

Parts of URL

Hypertext Transfer Protocol

Domain Name

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.

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).

ACCESS

TLD, also known as the Web Suffix, typically identifies the type of organization of the

Website.

ACCESS

DOMAIN TYPE.com Commercial.edu Educational.gov Government.mil Military.net Network.org Organization

ACCESS

Once the browser has connected to the Website,

a document file, containing HTML, is sent back to your computer.

COMMUNICATION

Communication is the most popular Internet activity, and its impact

cannot be overestimated.

COMMUNICATION

Electronic Mail (E-mail) is the transmission of electronic

messages over the Internet.

Web-Based E-mail AccountsClient-Based E-mail Accounts

COMMUNICATION

Web-Based E-mail Accounts do not require an E-mail program to be

installed on your computer.

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.

COMMUNICATION

Client-Based E-mail Accounts require a special program known as an E-

mail Client to be installed on your computer.

COMMUNICATION

Elements of E-mail

HeaderMessageSignature

COMMUNICATION

E-mail Header Information

AddressesSubject

Attachments

COMMUNICATION

Unsolicited or unwelcome E-mail are called SPAM.

Distraction, NuisanceDangerous

COMMUNICATION

A more efficient approach to control spam has been the development and use of Spam Blockers or Spam

Filters.

COMMUNICATION

Messaging is another messaging system that the Internet provides.

Text Massaging (SMS)Instant Messaging (IM)

COMMUNICATION

Text Messaging is the process of sending a short

electronic message, typically less than 160

characters, using a wireless network to another person.

COMMUNICATION

Instant Messaging allows two or more people to contact each other via

direct, live communication.

COMMUNICATION

Social Networking is one of the fastest growing and one of the most significant

Web 2.0 applications.

COMMUNICATION

Social Networking sites focus on connecting

people and organizations that share common interest or activity.

COMMUNICATION

These sites typically provide wide array of tools that facilitate

meeting, communicating, and sharing.

COMMUNICATION

Best Known Social Networks

FacebookGoogle+LinkedIn

COMMUNICATION

Facebook was initially launched by Mark

Zuckerberg at Harvard University for college

students in 2004.

COMMUNICATION

By 2008, Facebook is the most widely used Social Networking site. It now

has a billion users worldwide.

COMMUNICATION

Features of Facebook

Instant MessagingPhoto and Video Sharing

Games

COMMUNICATION

Categories of Facebook Users

IndividualsBusinesses

Communities

COMMUNICATION

Google Inc. launched Google+ in 2011. it is a combination of some

Google Inc.’s previously existing and new services.

COMMUNICATION

Google Inc. Services

CirclesHangouts

Sparks

COMMUNICATION

LinkedIn started in 2003 and has become the

premier business-oriented social networking site.

COMMUNICATION

LinkedIn provides tools to maintain business contacts, develop extended business

networks, research individual businesses, search

for job opportunities, and more.

COMMUNICATION

Other Social Networking Sites

BlogsMicroblogs

Webcasts and PodcastsWikis

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.

COMMUNICATION

Microblogs publish short sentences that only make a few seconds to write,

rather than long stories or posts like a traditional

blog.

COMMUNICATION

Webcasts and Podcasts deliver media content

such as music and movies over the Internet to your

computer.

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.

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.

COMMUNICATION

Wikis are Websites specifically designed to

allow visitors to use their browser to add, edit, or

delete the site’s content.

COMMUNICATION

Wiki comes from the Hawaiian word for FAST,

which describes the simplicity of editing and publishing through Wiki

software.

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.

SEARCH ENGINES

Search Engines are specialized programs that

assist you in locating information on the Web

and the Internet.

SEARCH ENGINES

AskBing

GoogleYahoo

SEARCH ENGINES

Content Evaluation

AuthorityAccuracy

ObjectivityCurrency

ELECTRONIC COMMERCE

Also known as E-Commerce, it is the

buying and selling of goods over the Internet.

ELECTRONIC COMMERCE

Advantages

Eliminated Operations Cost

Reduced Inventory

ELECTRONIC COMMERCE

Disadvantages

Immediate Delivery of GoodsInability to TRY-ON PurchaseSecurity of Online Payments

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.

CLOUD COMPUTING

Basic Components

ClientsInternet

Service Providers

CLOUD COMPUTING

Clients are corporations and end users who want

to access data, programs, and storage.

CLOUD COMPUTING

The Internet provides the connection between the client and the providers.

CLOUD COMPUTING

Service Providers are the organizations with

computers connected to the Internet that are willing to provide access to software,

data, and storage.

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.

WEB UTILITIES

Plug-InsFilters

File Transfer UtilitiesInternet Security Suites

WEB UTILITIES

Plug-Ins are programs that are automatically

started and operate as a part of your browser.

WEB UTILITIES

Widely Used Plug-Ins

Adobe Acrobat ReaderAdobe Flash PlayerApple QuickTime

Microsoft Windows Media PlayerRealNetworks / RealPlayer

WEB UTILITIES

Filters block access to selected Websites. It

allows individuals, as well as organizations, to

restrict selected sites and set time limits.

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).

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.

INTERNET SECURITY SUITES

Best Known Security Suites

McAfee’s Internet SecuritySymantec’s Norton Internet

Security