My future job and responsibilities


LAN — local area network, single farm connected through wires. (Not a server farm) MAN


Download 262.08 Kb.
bet2/9
Sana09.06.2023
Hajmi262.08 Kb.
#1470153
1   2   3   4   5   6   7   8   9
Bog'liq
2..

LAN — local area network, single farm connected through wires. (Not a server farm)

  • MAN — Metropolitan area network. When a city or area is connected through internet connection.

  • WAN- Wide Area Network is when a country or the whole world is connected together.

    Topology of a network


    • Mesh: two way connections in between nodes. It is complex

    • bus: Single wire shared by multiple computers. If there is a disturbance the whole network gets disturbed.

    • star: If one device crashes it doesn’t crash the whole system.

    • ring: Connected in a circular fashion. Passes tokens between devices. If any devices crash then the whole network gets destroyed.

    Networking Devices


    • Routers: They help in routing, create a path. It is an IP resolver.

    • hub: provides half duplex communications.

    • Switch: provides full duplex communication. It is intelligent because it allows two way communication.

    • Bridges: Helps my computer and the network connect to each other. It creates a path.

    • Firewalls: Lets some information in and keeps other information out. Accept information (allowing traffic), reject information (blocking trafic and reporting) or drop information (blocking traffic without giving a message).

    • Gateways: Helps block unnecessary data that will come and hamper your system.

    Servers


    • OSI: Open system interconnection. First ever structur for web communication between any two devices. There are 7 layers.

    7 server layers.


    A network engineer will work on the layers 2–7.

    1. Application layer: produces data.

    2. Presentation Layer: Translation layer. Encrypts and decrypts.


    3. Download 262.08 Kb.

      Do'stlaringiz bilan baham:
  • 1   2   3   4   5   6   7   8   9




    Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©fayllar.org 2024
    ma'muriyatiga murojaat qiling