Namen diplomske naloge je bil izdelava in primerjava delovanja navideznih okolij znotraj računalniškega sistema Linux. Uporabili smo programsko opremo VirtualBox ter KVM, znotraj katerih je bilo kreirano posamezno virtualno okolje, ki ga poganja operacijski sistem Linux distribucije CentOS. Primerjali smo hitrosti delovanja navideznih sistemov ter porabo virov ob izvajanju določenih programov.The purpose of this thesis is the creation and comparison of virtual environments within the Linux OS. We used the softwares Virtualbox and KVM, within which a separate virtual environment was created ran by the Linux OS distributed by CentOS. We compared the speeds of said virtual machines as well as their resource consumption