Network Design:-
1 - Client-server
2 - Peer to Peer
1.
Client-Server:-
· Clients such as laptops and desktop computers
contact the server and request to use data or share its other resources with
it.so client works as a services requester & server works as a service
provider.
· A client-server network is a central computer, also
known as a server, which hosts data and other forms of resources.
·
A client-server network is
designed for end-users(laptop ,computer ,mobile), called clients,
to access resources such as files, songs, video collections, or some other
service from a central computer called a server.
Advantages of client-server network :-
- To using this setup is central management of the server. Only one server is used to host the resources that all the clients request and use. This is especially good for server administrators, because they only have to be in one place and can solve all the problems in one place, as well. Having to manually update several hundred servers would take much more time. One centrally managed server is the key to ease of management, and it is cost effective, too.
- using one physical server is that the configuration is simple to set up and takes less time to troubleshoot. For instance, if there were a site with multiple servers providing redundant services, and it was having issues, it could take an extreme amount of work to effectively troubleshoot why services are being hindered. In a single server role, all troubleshooting takes place at one physical server, so it takes much less time.
Disadvantages
of client-server network :-
· All the
resources are located on one server, this creates a single point of
failure (SPF). An SPF means that if anything should happen to the server -
such as a fried computer chip, a crashed hard drive that is not recoverable, or
a major power outage that destroys the motherboard - then all the resources
that were once hosted on that server will no longer be available.
1. Peer to peer network :-
·
A peer-to-peer (P2P) network is created
when two or more PCs are connected and share resources without going through a
separate server computer.
·
A P2P network can be an ad hoc
connection—a couple of computers connected via a Universal Serial Bus to
transfer files.
·
A P2P network also can be a permanent
infrastructure that links a half-dozen computers in a small office over copper
wires.
·
A P2P
network can be a network on a much grander scale in which special protocols and
applications set up direct relationships among users over the Internet.
·
The initial use of P2P networks in
business followed the deployment in the early 1980s of free-standing PCs.
Advantages of
P2P network :-
·
it’s very reliable. For example, the failure of one
peer will not affect the functioning of other peers.whereas in a client-server
network if the central server fails it will affect the whole network.
· Also there’s
no need for specialist staff such as network technicians or system
administrators as every user has the freedom to choose which files (e.g music,
video, etc) they want to share with other users. Basically every user is their
own administrator.
· P2P networking
is also very easy to install and is relatively cheap in comparison to a
client-server network
Disadvantages
of P2P Network:-
· People should
also take into consideration that it’s very difficult to back up files as P2P
is a decentralised system. It’s highly recommended that each computer have it’s
own back up system.
· P2P networking
is generally only useful for those in small groups (e.g <10), where a high
level of security is not necessary. On the contrary it would not be suitable
for those in larger groups ( e.g a business network) as there’s a high
risk of catching a virus.
· P2P networking is that viruses can easily be
transmitted. Therefore it’s each users responsibility to ensure maximum
security to prevent such viruses entering the system.
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