1.4 wired and wireless networks

1.4 wired and wireless networks

1. ARPANET-First ever network

2. NETWORK-join devices together.

3. LAN-local area network.

   • Computers connected together over a small geographical area.
     • Has it’s own infrastructure of cabling

4. WAN-wide area network

   • WAN has a bigger geographical area than LAN.
     • Uses external hardware and external infrastructure

5. Client server- access data from the sever

   • Relies on a central server
   • Requests services from the server.
     • HIGH AND POWERFUL SERVERS
   • Back ups are easily managed by a client server

6. Peer to Peer-

   • All have equal status’l
   • Can request and provide network service
   • No additional hardware/software needed to set up
   • Easier to set up
   • Cheaper
   • People are responsible for backing up their own data

7. modem-convert from analogue to digital.

8. The cloud

   • a network of servers
   • run applications.
   • will store data
   • ADVANTAGES OF THE CLOUD.
     • increase of storage
     • access files from anywhere
     • collaborates with others in the world.

9. Virtual Network

   • within LAN it is possible to break the network into the virtual networks.
   • allow one group of devices to not 'see' another group of devices.
   • share some networks hardware and cabling
   • software that different networks can access.
   • easier to maintain a network
   • leads to a flexable network setup

10. DNS SERVER

    • HTTP-hypertext transfer protocal.
      • PUTS ALL THE PACKETS TOGETHER
    • www