Mindmap

Networks

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Inhalt der Mindmap

Networks

LAN
- Used for one area or company
WAN
- Used for wide areas and multiple companys and people. The www is one of these
Topologies
- Bus
  - Computers connected to one wire and there are terminators at either end of the main wire
- RIng
  - Computers are connected in a ring formation and each computer is connected to at least two others
- Star
  - Or computers are connected to a central wire or switch
- Mesh
  - Circuit switching
    - eg. Telephone. all data arrives at the same speed on the same network
  - Packet switching
    - Pathfinding
    - Data is split into packets and numbered to be rearranged at the destination
  - All computers are connected to at least two others
Protocols
- Standard protocols
  - HTTP(Hypertext transfer protocol)
    - Requests HTML file from a websever
    - HTTPS
      - Secure version of HTTP
  - FTP
    - File transfer protocol for transferring files between computers
  - POP3(post office protocol)
    - Protocol for downloading mail from a server(receive)
  - SMTP(Simple mail transfer protocol)
    - Send(Email)
  - IMAP
    - Internet message access protocol. Replaced POP3