|
Lesson One:
Basic network knowledge
A network consists
of two or more computers connected together by
cables with the purpose of sharing tasks and
information. The complexities of modern networks
have evolved from these fundamental premises.
Currently, the use of networks as a business tool is
increasing as more organizations discover the case
with which they can reliably communicate and share
data, messages, graphics, printers, and other
hardware resources.
To understand
network functions, it is thus in the physical and
logical components comprising a network area. This
includes how physical components connect as well as
the electrical and logical attraction between them.
Included are descriptions of network models, to
apologies, cabling, and network Hanshin components.
After completing
this lesson, you should have a better understanding
of the following topics:
-
Network basics
-
Network structure
-
Network components.
Network Basics
The concept of
networking emerged from the need of stand-alone
computers to share information with other users in a
timely manner. Without a network, information must
be printed out or copied to CDs so others can copy
information to their computers. With a network,
sharing data and online communication among users is
simplified. To accomplish this a network utilizes a
group of physically and logically connected
computers, printers, and other devices to enable
sharing files, printers, communication, and other
resources.
Additional
advantages of networks include:
-
Communication and scheduling efficiencies are
maximized.
-
Applications
can be standardized, so all users have the same
application and version.
-
Costs
are cut through timely data and peripheral
sharing.
Local
Area Network (LAN)
A LAN consists of a
limited number of computers connected together in a
common area within a limited physical distance. For
example, a small company or office located on a
single floor of a building might use a LAN’s logical
environment. Earlier LANs allowed about thirty users
to connect on a cable not exceeding 600 feet.
Current LAN technologies support many more users and
have fewer cable distance restrictions.
A LAN combines
hardware and software technologies to allow users to
share resources such as data, programs, storage
devices, printers, and other peripherals. A LAN also
enables users to collaborate and interact by sending
messages and data to each other. Collaboration is
enabled by groupware applications that run on both
the server computer and client workstations. |