Networking & Server

Networking & Server

1. A computer network is any combination of computers and other devices that are connected by a central Internet signal.

   • Modem: Internet Service Provider.
   • Router: Hub that distributes the internet connection.
   • Ethernet cords or wireless adapters.
     • Netwrok media
   • Devices: hardware such as computers, laptops or even cellphones

2. According to what you need, there are different Types of networks that are based on geographic proximity.

   • LAN
     • Network that connects computer and devices in a limited geographical are such as home, school lab or office.
   • WAN
     • A wide area network that covers large geographical areas such as a country or the world. It includes telephone lines, radio waves. The internet is the worlds largest WAN.
   • MAN
     • High speed network that connects local area networks in a metropolitan area such as a city or a town.
   • PAN
     • Network used for communication among various computer devices, including telephones and personal digital assistants, in proximity to an individual’s body.

3. Layout of the various interconnected elements on a computer network are Network Topologies

   • Bus
     • Data flows on a central wire.
   • ring
     • No central connecting medium, data flows like a cycle.
   • Star
     • Central connecting device with all data.
   • Mesh
     • Every host is connected to every other host on the network.

4. Basic Architecture is based on Host Roles.

   • Peer to peer
     • Connects less than 10 computers. All computers have equal capabilities to use all the resources available in the network.
   • Client server
     • One computer provides services (server) by accessing to the hardware, software and other resource on the network to different computers (clients) that request the services. n

5. Importance:

   • Sharing
   • Centered Data Base
   • Communication

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