As part of a new network design, you are helping the Network Management Team to develop a proactive report to identify places in the network where problems may happen. The network management tool can

Packet loss is typically measured through active probing such as ICMP or IP SLA, not as a threshold-crossing metric derived from routine SNMP GET polling of standard interface counters.

CPU utilization is a standard SNMP-polled OID (e.g., ciscoProcessMIB) that reflects device health; sustained high CPU can indicate impending failure or an attack, making it a key threshold-crossing metric for proactive alerting.

Heat dissipation is a physical/environmental sensor reading not universally exposed via standard SNMP MIBs on network devices and is not a standard network performance threshold metric.

IP reachability requires active probing such as ping or traceroute and cannot be determined solely through passive SNMP GET polling of device counters.

Energy consumption is not a standard network performance threshold metric and is not widely exposed through SNMP MIBs used in typical network management performance polling.

Link bandwidth utilization is tracked via ifInOctets/ifOutOctets in the IF-MIB and can be polled via SNMP GET; crossing a utilization threshold signals congestion risk before packet loss occurs.