Reference
WAN
Abbreviation for “Wide Area Network.”
(2)WAN (Wide Area Network)
A “WAN” is a network that connects computers from remote locations or
connects LANs, using communication service (line services) that are provided by a telecommunications provider.
LAN
Tokyo head office
WAN
LAN
Osaka branch office
Communication
line
Leased line, etc.
Reference
Provider
Refer to “Chapter 9-4-3 3 Communication services.”
Reference
Access point
An “access point” is a connection point
that is provided for Internet users by a
provider. Users connect to an access
point by various means such as a
leased line, ISDN line, or phone line.
(3)Internet
The “Internet” is a global system of interconnected networks comprising
of LANs and WANs at corporations, and single computers in individual
households.
By using the Internet, it is possible to view Web pages and exchange
e-mail. In addition, it is possible to transmit information across the globe
by creating and publishing a personal Web page.
Subscriber of provider
Corporate network
Server
Provider
Provider
Server
Server
Corporate network
Provider
Provider
Access point
2
Network components
In order to build a network, it is necessary to understand the typical network architectures and components that comprise a network such as networking equipment and devices.
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