2. Intranet
An intranet is a private computer network that
uses Internet protocols and network connectivity
to securely share part of an organization's
information or operations with its employees.
For instance, software and hardware for the
Internet widely widespread can be used as it is by
constructing the in-house informational common
system by using the communication protocol
widespread by the Internet.
Moreover, to use the standardized technology, it
becomes easy to enhance to the extranet in
cooperation with the other companies.
3. Firewall
System that prevents it from invading computer
network in organization from the outside.
Moreover, it is computational which such a
system was built in. The data that flows in the
boundary with the outside so that the third party
might not invade through an external network of
the Internet etc. , and stealing a glance, the
falsification, and the destruction, etc. of data and
the program be done is observed, and in the
network such as the enterprises, an illegal access
should be
detected and be intercepted.
4. Router
A router is a computer whose software and
hardware are usually tailored to the tasks of
routing and forwarding information.
A part of business large-scale
router.
A thin cable that has expanded
yellow is an optical fiber for ten
Gigabit Ethernet.
5. References
wikipedia
http://ja.wikipedia.org/
Yahoo!
http://www.yahoo.co.jp/
