networks

networks

1. two or more computers that are linked in order to share resources (such as printers and CDs), exchange files, or allow electronic communications.

2. Hardware

   • Router
     • switch
       • hub

3. Network topologys

   • Mesh
     • Manages high amounts of traffic
     • Building and maintaining the topology is difficult
   • Partial Mesh
     • fewer routes for a message to travel along
     • not all nodes are connected directly to each other
   • Star
     • Easy to install and wire. No disruptions to the network when connecting or removing devices
     • it is expensive to install

4. Types of networks

   • WAN
     • wide-area network (WAN) is a collection of local-area networks (LANs) or other networks that communicate with one another.
   • LAN
     • P2P
       • P2P) network is created when two or more PCs are connected and share resources without going through a separate server
       • Easy file sharing: An advanced P2P network can share files quickly over large distances.
       • Ensuring that viruses are not introduced to the network is the responsibility of each individual user
     • Client server
       • a computer system in which a central server provides data to a number of networked workstations.
       • greater security of the network, more control
       • If all the clients simultaneously request data from the server, it may get overloaded