Chapter 2 - The Internet
Internet is a
worldwide collection of networks that links millions of businesses, government
agencies, educational institutions, and individuals
Evolution of the internet
Connecting to the internet
Connecting to the internet
| |
Wired
|
Wireless
|
Cable Internet service
|
Wi-Fi (wireless fidelity)
|
DSL (digital subscriber line)
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Mobile broadband
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Fiber to the Premises (FTTP)
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Fixed wireless
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Satellite Internet Service
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- Cybercafé ➤ a location that provides computers with Internet access, usually for a fee
- Hot spot ➤ a wireless network that provides Internet connections to mobile computers and devices
- Internet service provider (ISP) ➤ a business that provides individuals and organizations access to the Internet free or for a fee (Unifi,TM,Celcom)
- IP address ➤ sequence of numbers that uniquely identifies each computer or device connected to the Internet
- Domain name ➤ text-based name that corresponds to the IP address
- DNS server ➤ translates the domain name into its associated IP address
The World Wide Web
⛧The World Wide Web (www) consist of webpages which has
a unique address called a web
address or
URL
⛧ Website is a collection of related webpages and
associated items
Types of websites:
- Online social network
- Informational
- Media
sharing and bookmarking sites
- News,
weather, sports, and other mass media
- Educational
- Business,
Governmental, and Organizational
- Blogs
- Wikis
- Health
and Science
- Entertainment
- Financial
- Travel
and Mapping
- Shopping
and Auctions
- Careers
and Employment
- E-Commerce
- Portals
⛧ Web server is
a computer that delivers requested webpages to your computer
⛧ Browser is an
application that enables users with an Internet connection to access and view
webpages on a computer or mobile device
⛧ home page is
the first page that a website displays
⛧Web app hosts usually provide storage for
users’ data and information on their servers, known as cloud storage
⛧ Web publishing is
the development and maintenance of websites
Media on web
*A plug-in is a program that extends the capability of a
Web browser
Other Internet Services
⚛ Email program
allows
you to create, send, receive, forward, store, print, and delete email messages
⚛ An email list
is a
group of email addresses used for mass distribution of a message
⚛ Instant
messaging (IM) is
a real-time Internet communications service
⚛ A chat is a
real-time typed conversation that takes place on a computer or mobile device
⚛ A chat
room
is a
website or application that permits users to chat with others who are online at
the same time
⚛ A discussion
forum is an
online area in which users have written discussions about a particular subject
⚛ VoIP
(Voice over IP) enables users to speak to other users over the Internet
Example: viber, whatsapp, skype
⚛ FTP
(File Transfer Protocol) is an Internet standard that permits file uploading
and downloading to and from other computers on the Internet
- FTP Server: a
computer that allows users to upload and/or download files using FTP
Netiquette
The
code of acceptable Internet behavior
