How to get root network?

Could you elaborate on the process of acquiring root network access, please? I understand that it involves gaining the highest level of administrative privileges, but I'm curious about the specific steps and considerations that need to be taken. Is it a matter of exploiting vulnerabilities in a system's security or is there a more legitimate way to obtain such access? What are the risks involved and how can they be mitigated? Additionally, what are some common tools or techniques used to achieve root access? Your insights into this complex topic would be greatly appreciated.