Introduction:
This lesson provide to trainees more information for Different types of networks to help the trainees Improve knowledge.
Objectives:
- Different types of networks.
- Definition every type of networks.
- Summary.
Different types of networks
Different types of (private) networks are distinguished
based on their size (in terms of the number of machines), their data transfer
speed, and their reach. Private networks are networks that belong to a single
organization. There are usually said to be three categories of networks:
There are two other types of networks: TANs (Tiny Area
Network), which are the same as LANs but smaller (2 to 3 machines), and CANs
(Campus Area Networks), which are the same as MANs (with bandwidth limited
between each of the network's LANs).
LAN
LAN stands
for Local Area Network. It's a group of computers which all belong to
the same organization, and which are linked within a small geographic area
using a network, and often the same technology (the most widespread being Ethernet).
A local area network is a network in its simplest form. Data
transfer speeds over a local area network can reach up to 10 Mbps (such as for
an Ethernet
network) and 1 Gbps (as with FDDI
or Gigabit Ethernet). A local area network can reach as many as 100, or even
1000, users.
By expanding the definition of a LAN to the services that it
provides, two different operating modes can be defined:
- In a "peer-to-peer" network, in which communication is carried out
from one computer to another, without a central computer, and where each
computer has the same role.
- in a "client/server" environment, in which a central computer
provides network services to users.
MANs (Metropolitan
Area Networks) connect multiple geographically nearby LANs to one another
(over an area of up to a few dozen kilometres) at high speeds. Thus, a MAN lets
two remote nodes communicate as if they were part of the same local area
network.
A MAN is made from switches or routers connected to one another
with high-speed links (usually fibre optic cables).
WANs
A WAN (Wide Area Network or extended network)
connects multiple LANs to one another over great geographic distances.
The speed available on a WAN varies depending on the cost of
the connections (which increases with distance) and may be low.
WANs operate using routers, which can "choose" the
most appropriate path for data to take to reach a network node.
The most well-known WAN is the Internet.
Summary:
- What are different between MAN and WAN?
No comments:
Post a Comment