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Basic components IV (06.523)

Basic components IV (06.523). Basic components of communication networks IV. Client/Server versus Peer to Peer. Compatibility Cost Features Organisation. Data Compression. Run-length encoding Code book compression Huffmann Encoding Multimedia compression. OSI network layers.

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Basic components IV (06.523)

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  1. Basic components IV (06.523) Basic components of communication networks IV

  2. Client/Server versus Peer to Peer • Compatibility • Cost • Features • Organisation

  3. Data Compression • Run-length encoding • Code book compression • Huffmann Encoding • Multimedia compression

  4. OSI network layers • Physical layer (voltages, timing factors, duplex) • Data link layer (makes transmission error free) • Network layer (addressing and routing at a hardware level) • Transport layer (controls connections, packet routing at a software level) • Session layer (streams interface) • Presentation layer (makes the interface look tidy) • Application layer (http, etc.)

  5. Synchronisation • Bit synchronisation • Byte synchronisation • Frame/Packet synchronisation

  6. Overview of Basic Components • Current and future trends • User level networking • Basic components in communication networks • Difference between simplex and duplex, serial and parallel • Standards and standardisation organisations

  7. Communication networks (current) • Allow the transfer of files between computers • Allow the sharing of peripherals • Allow sending and receiving of email

  8. Communication networks (future) • Cooperative work environment (CVS, GroupWise) • More communication - voice, etc • No need to print • Same environment wherever you sit

  9. Basic components • Server • Client • Interface at four different levels

  10. Networking standards • Common standards • Standardising bodies • Importance of standards to you

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