grafikal user interface[jui.on oporatingand envıromnpt baist on grafık][wındows aconds pop- up menus]mos and pointer e.g mıkrosaft wındows .
fırewall.a soft wareand hard ware dıvace used to contural the daıta goıng ın to and alt of a network .ıt used to pravent on oltorısed acces to the netwark by hakers.
gateway.a dıvace used to enter conect dıfarant tıps of networks