This document discusses how network management systems work using SNMP, a network management system, MIB, and UPS. SNMP is a protocol that allows network devices to communicate information that can be used to monitor and control devices on an IP network. A network management system is software and hardware that manages networks by monitoring for issues, outages, security threats and traffic using MIBs, which provide standardized information about networked devices. UPS devices provide backup power to computers during power outages to allow safe shutdown.