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Internet and the
World Wide Web
- Typical services provided by an ISP
- An Internet Service Provider
(ISP) sells internet access to
companies or individuals
- Services:
- Bandwidth options
- Email Service
- Web servers
- Website filtering
- Web hosting service
- Security package (to fight
hacking/viruses etc.)
- Junk Email and Pop-up blocker
- Customer Service
- Bandwidth options
- Services:
- An Internet Service Provider
(ISP) sells internet access to
companies or individuals
- Features of pages on the W.W.W.
- Protocols/Languages
- Webpages written
using HyperText
Markup Language
(HTML)
- Hypertext Transfer
Protocol sends
webpages across
internet.
- The Uniform Resource
Locator (URL)/ Web Address
usually begins with "http://"
indicating the page uses
HTTP
- Webpages written
using HyperText
Markup Language
(HTML)
- Webpages
- Webpages can contain
sound, video, animation,
graphics and hypertext as
well as simple text
- Webpages are viewed
using a web browser.
- Hypertext
provides the user
with clickable
links to other
pages on the web
- Webpages can contain
sound, video, animation,
graphics and hypertext as
well as simple text
- Protocols/Languages
- Differences between...
- Internet
- Does not contain Information
- Provides transport links for
information to pass between
computers
- Is a network of
networks
- Does not contain Information
- W.W.W.
- An application that
runs on the internet
- Is the largest and most
used service on the
internet
- Can be
described as a
multimedia
service
- An application that
runs on the internet
- Internet
- Hardware and Software
Required for Online
Access
- PC/Mac
- An ISP
- Browser Software
- A Telecommunications Line
(dialup, ISDN, ADSL). The
physical connection to the
internet.
- A device that allows the computer
to communicate with the internet: a
cable/ an ADSL broadband/
standard modem or an ADSL
wireless router
- An ADSL...
- ... transfers data...
- ...to the internet
(uploading)
- ...from the internet
(downloading)
- ...to the internet
(uploading)
- ...allows the user to have
access to the internet and make
phone calls simultaneously
- ...expands the
data available for
data transfer
- ... transfers data...
- An ADSL...
- PC/Mac
- Comparison between the
internet and an intranet
- The advantages of an Intranet
- Information, once
uploaded can be viewed
by the entire organization
at any time
- Users can: communicate using
email, bulletin boards and
messaging facilities;share
resources; find out general
information about the organization
- Can improve communications
within an organization
- Information, once
uploaded can be viewed
by the entire organization
at any time
- What is an Intranet?
- Private network
website used within an
organization
- Uses the same protocol
as the web, i.e. TCP/IP
- Not accessible by
the public and can be
protected by a
firewall
- Private network
website used within an
organization
- The advantages of an Intranet
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