3.1.2 Network Architecture

(Classification Of Network)(Network Architecture)(Internet Overview)(Internet Services)(Network topology)

    Definition:
           
           1. A network model in which all computers can function as
            clients or servers as needed, and there’s no centralized
            control over network resources.

           2.  Is a simple, inexpensive network that typically connects
            fewer than 10 computers.



Peer To Peer Network Diagram





Advantages of a peer-to-peer network:
Disadvantages of a peer-to-peer network:



Definition:
   
            Network in which one or more computers act as a server, and the other computers (clients) on the network request services from the server.




Client Server Diagram

  •        Computers connected together to create a network which fall into two categories: clients (workstations) and servers. 


       1. Client

             Computer on a network that requests resources from the server. Also called a workstation.

       2. Server
             Computer that controls access to the hardware, software, and other resources on a network, and provides a centralized storage area for programs, data, and information.
             Note: Server can be a mainframe computer used in a network environment.




Client Server Network Diagram




  • Server

             Servers are special, powerful computers that provide ‘services’ to the client computers on the network.
             These services might include:
             Providing a central, common file storage area
             Sharing hardware such as printers
             Controlling who can or can’t have access the network
             Sharing Internet connections



 Advantage Of Client Server

  • Centralized - Resources and data security are controlled through the server.
  • Scalability - Any or all elements can be replaced individually as needs increase.
  • Flexibility - New technology can be easily integrated into system.
  • Interoperability - All components (client/network/server) work together.
  • Accessibility - Server can be accessed remotely and across multiple platforms.

 Disadvantage Of Client Server
  • Expense - Requires initial investment in dedicated server.
  • Maintenance - Large networks will require a staff to ensure efficient operation.
  • Dependence - When server goes down, operations will cease across the network

Review … between two network architecture