7.2.6/8 Network models and components

    Cards (15)

    • Client-server model is a server with computers on a network connected to it. This is oftren use for services and resources often through the internet
    • In a client-server model what is the client?

      the COmputer
    • In order to access the services/resources of a server in a client access must be authorized
    • In a thin client all computational resources are served by a single computer (server) which provides all but the most essential resources to the thin clients. Costs are often lower and it is easier to manage upgrading and imposing security.
    • P2P networks don't have a central server and instead of numerous 'peers' which can directly interact with eachother.
    • It is easy to scale a p2p network as another peer can just be added or removed
    • Each device in a P2P both provides and receives resources
    • ISPs are companies that privately own core networks that connect with other ISPs core networks allowing the internet
    • There are three tiers of ISP, what is tier 3:
      Local ISPs that you can have contracts with and that provide internet access
    • There are three tiers of ISP, what is tier 2:
      The ISPs that go between tier 1 and tier 3, they are regional or country-wide. They are otherwise the same as tier 3s but often charge the tier 3s to access their system
    • There are three tiers of ISPs, what is tier 1:
      Tier 1 span the globe, they charge tier 2 providers for access to the tier 1 servers
    • Routers manage communication between devices on a network, there are wired and wireless variants
    • Routers encapsulate data with metadata before sending it
    • A network switch is not required for internet access but is used by large businesses to connect massive amounts of devices with ethernet cables.
    • Layer 2 network switches use media access control addresses (MAC addresses), to send data to the correct device