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2.3 CLASSIFICATION OF NETWORK - Coggle Diagram
2.3 CLASSIFICATION OF NETWORK
Network is classified based on its coverage area (distinguish by the geographical area)
Enterprise Private Network (EPN)
A type of network built by an enterprise to interconnect various company sites, e.g., production sites, head offices, remote offices, shops, in order to share computer resources
ADVANTAGES
The messages are secure because they are encrypted
They are cost effective & scalable
They help to centralize IT resources
DISADVANTAGES
A full-time network administrator is needed to keep the system up & going
The use of firewalls, security protocols & systems increase the cost of upkeep & maintenance organization
Local Area Network (LAN)
A network that connects computers & devices in a
limited geographical area
such as a room, a floor or a building
Where we can find LAN?
College Computer Lab Network
Home Network
KMPP Network
Characteristics of LAN
Area of coverage
: It covers limited geographically area
Cost of setup
: Cost of setting up a LAN is usually low as compared to a WAN as it is localized over smaller geographic area & does not require additional devices
Ownership
: LAN's are owned & operated by individual organizations
ADVANTAGES
Hardware & software can be shared
All the users work can be stored in a central place
Data can be shared because database files stored in the server are available to users around the network
DISADVANTAGES
Printing can be slow, long print queues may develop
A virus can spread more easily
As data is shared there is a greater need for security
Wide Area Network (WAN)
A network that covers a
large geographic area
such as a city, states, countries or the world using a communications channel that combines many types of media such as telephone lines, cables & radio waves
Characteristics of WAN
Ownership
: WAN has no ownership
Area of coverage
: The area covered by a WAN is
large
, usually covering two or more cities, states, countries or continents
Cost of setup
: Cost of setting up a WAN is higher compared to a LAN as it requires more planning, more hardware & leasing long distance transmission lines
ADVANTAGES
Centralizes IT infrastructure
: provides the key business scale by providing centralized access to all companies
Sharing of software & resources
: share software applications & other resources with other users on the internet
High bandwidth
: WAN's cover large geographical area of more
DISADVANTAGES
Security breaches
: Encryption of secure data such as financial transactions is necessary because it is even easier to capture data
High configuration process
: the bigger the WAN, the more worth it is set up
Issues of maintenance
: Data center managers should be able to identify failures before they occur & minimize data downtime as much as possible, regardless of the reason
Virtual Private Network (VPN)
A private network that provides a mobile user with a secure connection to a company network server, as if the user has a private line
Who uses VPN?
Mobile users
Vendors
Customers
What does VPN do?
Helps to ensure that
data is safe
from being intercepted by unauthorized people
by encrypting data
as it transmits from a notebook computer, smartphone, or other mobile devices
ADVANTAGES
Enhanced security
: data kept secured & encrypted. The information is away from the hacker's eye when network connect trough a VPN.
Remote control
: the information can be accessed remotely even from home or from any other place. A VPN can increase productivity within a company
DISADVANTAGES
A VPN may decrease internet speed
: because the connection to the internet with VPN is rerouted through the VPN server
Configuration can be difficult if dont know what we are doing
