In this thesis, we have identified the problems of ensuring the service quality of interactive applications, which require data transfer in real time. We realised basic concepts of network service and got acquainted with the problem of waiting queue. In view of network service theory, we introduced two examples of real loss service systems with final waiting queue. The problem of waiting queue is solved with scheduling algorithms. There are several kinds of scheduling algorithms, which can be compared by different criteria. Selected algorithms have been used in simulation of system M/M/1/s and analysed in more detail. The experiment was done in software environment OMNet++, which makes it possible to set up a simulation model, carry out the simulation and analyse the results. The results of the simulation have been used to analyse and compare the efficiency of the selected scheduling algorithms.
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