Explain Network Model.
PEER TO PEER:
PEER TO PEER:
· 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.
· Peer-to-peer networks have many disadvantages:
o this system is not centralised, making administration difficult
o lack of security
o no link in the network is reliable
· peer-to-peer architecture does have several advantages:
o reduced cost (the costs involved in such a network are hardware, cabling and maintenance )
o well tested simplicity
· The client/server model is a computing model that acts as a distributed application which partitions tasks or workloads between the providers of a resource or service, called servers, and service requesters, called clients
· A network architecture in which each computer or process on the network is either a client or a server.
· Servers are powerful computers or processes dedicated to managing disk drives (file servers), printers (print servers), or network traffic
(network servers ).
· Clients are PCs or workstations on which users run applications.
· Clients rely on servers for resources, such as files, devices, and even processing power.
· Another type of network architecture is known as a peer-to-peer
architecture because each node has equivalent responsibilities.
· Both client/server and peer-to-peer architectures are widely used, and each has unique advantages and disadvantages.
· Client-server architectures are sometimes called two-tier architectures.