Internet Overview Linking the world one computer at a time Unit - - PowerPoint PPT Presentation

Internet Overview

Linking the world one computer at a time

Unit Objectives:

• What is the Internet
• How to connect.
• Define things facilitated on the Internet
• Describe how to connect to the Internet from your home, and the use
• f hardware including modem, router and wireless card
• Identify key areas of the web browser
• Demonstrate understanding of a web browser while performing tasks

related to the browser including links, bookmarks, privacy, browsing history, tabs, downloading and plugins

What is the Internet

• Network: 2 or more computers
• Internet: All networks and computer which are “online”
• Internet is the largest computer network

How do you connect?

• Wired or Wireless
• Wired uses an Ethernet cable and a router
• Router connected to modem, connected to

Internet

• Wireless uses router without Ethernet
• YOU NEED AN INTERNET CONNECTION TO

CONNECT TO THE INTERNET

Discussion: Online vs. Offline

Internet Overview: Server & Client

Servers and Clients:

• A server holds information and software so that other

computers can access it. Websites are stored on servers.

• The “cloud” is really a bunch of servers!
• When you access a webpage, your computer is a client.

The client runs software which allows it to see the

• information. An example of software includes web

browsers or e-mail software.

FEATURES OF THE INTERNET

(WE WILL BE LEARNING ABOUT SOME OF THESE IN FUTURE CLASSES!)

Terms and concepts

Web browsers

• Web browsers are software that connect you to Internet
• Examples are Google Chrome, Firefox, Opera, Internet

Explorer, the new Edge, and Safari

• Web browsers all do the same thing; still, they work

better on some operating systems over others (Apple uses Safari, Microsoft uses Edge or Internet Explorer, Android devices use Chrome)

• Mobile web browsers lighter, quicker

Search Engines

• A search engine allows you to do a search of all types of

media on the web.

• There are many types of search engines.
• Obvious: Google, Bing, Yahoo, Excite
• Less obvious: Search engines in websites

. Next…

Group Task: Perform a Google Search

• Search for a “good computer to buy”
• Type term into web browser
• What search engine opens up?
• Discuss:

– Ads – Possible malicious websites

• More specific search: “” or specific terms

(desktop)

Task: Other searches

• Airline prices: SAN to BOS
• Health information: Reliable???
• Specificity: Where is the nearest airport? (GPS)
• Less words: bakery San Diego
• Weather
• Put define before a word (define network)
• Conversion (3 dollars in euros)
• Use * for what you can’t remember (Four score and * our

forefathers)

• Is your store open? Type “hours of information” with a

store name

Social Networks

Social Networks Overview:

• Social networks are one of the main ways that people

communicate online.

• Social networks include Facebook, Twitter, Linked In,

Pinterest and more.

• Each social network has a different look, and a slightly

different focus.

• Privacy is a factor in social networks.
• Social networks require a password and user ID

Other online features: VoIP

Voice Over Internet Protocol (VoIP)

• VoIP allows you telephone service through your internet connection.
• This is the way that Skype and Facebook video calling work.
• require that both users are on the same program (Facebook, Skype),

and you do need an Internet connection for it to work.

• Ooma (purchase hardware) and Google voice (uses Google account)

– Uses Internet connection, Google Voice – (PC to PC, PC to Phone) – Voice mail – Text (Google Voice) – Number porting: Keep old phone number

.

Media on the Internet

Streaming media

• Listen to radio or watch TV on your computer.
• Media is downloading as it is playing.
• Examples include I Heart Radio, Pandora

(music), ESPN3 (sports) and news (CNN Live, PBS News Hour).

• Specialty events (Olympics, Oscars Live)

.

Anti-virus and Anti-malware

• It is important to have anti-virus installed when accessing the
• Internet. Some computers and devices come with one, others

require that you install one. If you have one already and want to replace it, you need to delete the previous version before installing new one

• Some are better than others. Recommended: Kaspersky and

Bit Defender. Windows Defender comes with Windows 10, and will be OK for most.

• You might also want to install an anti-malware program.

Suggested: Malwarebytes (free!)

• A mobile device will still need an anti-virus program.

Web browsers Overview

Chrome Web browser Internet Explorer Web Browser

End of slide presentation

Internet Part 2 will focus on more online things such as online shopping, online banking, maps and more!