Basic Networking Concepts - UVic.ca

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1Basic Networking Concepts1. Introduction2. Protocols3. protocol Layers4. Network Interconnection/Internet21. Introduction-A network can be defined as a group of computers and other devicesconnected in some ways so as to be able to exchange of the devices on the network can be thought of as a node; eachnode has a unique are numeric quantities that are easy for computers to workwith, but not for humans to : networks also provide names that humans can more easily remember than : , corresponding to the above addressConsists of 4 bytes separated by R first bytes (R= 1,2,3) correspond to the network address;-The remaining H bytes (H = 3,2,1) are used for the host Register: organization in charge of the allocation of theaddress ranges corresponding to considered: Geographical area (country) Organization, enterprise Department HostDomain Name System (DNS)-Mnemonic textual addresses are provided to facilitate the manipulationof internet addresses.

-The data exchanged, known as Protocol Data Unit (PDU), goes back and forth through the layers, each layer adds or removes its own header and vice-versa. Therefore a layer n PDU may become a layer n-1 data.

  Basics, Data, Unit, Protocol, Protocol data unit