If you need full access to the book, please write an email to the Publisher. Your request will be redirected to the author. If s/he is interested, s/he will directly contact you using the email address you have specified to discuss the conditions for obtaining access without the intermediary of the Publisher. The main attention is paid to optimization issues, as well as mathematical modeling of systems that are important for the initial stages of the design of communication networks. Examples of solving scalar and vector optimization problems are given taking into account mathematical models of various types of communication networks. Information is given about standard software packages that can be used for optimization and computer simulation of communication networks.