|
Derek
GI Certificate
Welcome Number
| |
|
Basic Equipment
used
in the structure of the Internet.
|
 |
What are the major pieces of equipment required for
the Internet, and what do they do? The diagram below displays the main pieces of
the Internet equipment from the User's PC to the online equipment. These
represent the most significant parts of the Internet's architecture.
 |
User
PC - A Multi-Media Computer equipped to send
and receive a variety of functions.
- Sound Card with Microphone/Speakers
For receiving and sending Voice, music etc.
- Video/Graphics display
card for receiving 3D, video, transmission etc.
- Video camera - To
enable a 'real time' moving picture onto the net for others to see
and hear.
- Voice recognition - To
allow commands to be given and letters to be written from 'voice' to
the user pc by the operator
|
 |
User's
Communication Equipment )PC)- This
is the communication equipment located at the User's home or work to
connect the Users' PC to the internet
- Analog Modem
(v.90=56K) Voice, Data, Fax, required to convert a signal through a
normal telephone cable.
- Cable Modem (27 MB)
required to make an access via
a cable connection.
- Electric Line
(1 MB) To enable a connection
to be made using a digital connection.
- Satellite (400 Kb) For
transmission via satellite.
- LAN
Local Area Network Connection
to other PC's via the internet.
- Routers
To enable a computer signal to
be routed to and from set locations
- Firewalls Used
to prevent access into certain areas without due authorization
User services are
services supplied to the PC User such as email, DNS, Usernet etc.
Security The
information used on the internet is ready available for all. It is
therefore important to have some form of security to prevent access from
users who enter areas which are nothing to do with them. Commonly known
as 'hacking'. Hacking is a punishable offence. By law.
|
 |
Local
Loop Carrier - Connects
the User to the ISP's Point of Presence.
|
 |
ISP POP-
This is the beginning of the ISP's
network. Connections from the user are accepted after
authentification here. |
 |
User
Services - these are the
services that most users would use along with Internet Access.
- Domain Name Server
- Email Host
- Usenet Newsgroups (NNTP)
- Special services such as quake,
telnet, FTP
- User Web Hosting
- (These servers require fast
interfaces and large/fast storage).
|
 |
ISP
Backbone - The ISP backbone
interconnects the ISP's POPs, and interconnects the ISP to other ISP's
and online content.
- A much deeper area and world of
large circuits, Routers, Switches, Backbone Providers/Exchange
points etc.
|
 |
Online
Content These are the host sites that the user
interacts with. Consisting of:-
- Web Server platforms
- Real-player Servers
- Hosting Farms
- These servers require fast
interfaces and large/fast storage.
|
 |
Origins
of online content This is the original
"real-world" sources for online information.
- Existing electronic information is
being connected from legacy systems.
- Traditional print resources are
being scanned and converted into electronic format
- Many types of video and audio programming are being
broadcast via the internet. Internet telephony is growing fast.
-
- Here is a
large picture of the world map (connected to the Internet)
|
| |
Our latest brochure is HERE!!
PPT BROCHURE HERE
Pub
A3
DOWNLOAD HERE
Pub
A4 DOWNLOAD HERE
WRD BROCHURE HERE
Korean Brochure
Private Tuition
ESL Courses
Pre-University
Courses
Homestays
(Learning with native teachers)
PC Software Courses
PC Design
& Build
International
Business
Courses
Van Hire (CDO)
|
