Which of the following could indicate that a host is offline?

The indication that a host is offline is primarily demonstrated through communication issues. When a host is offline, it is unable to communicate with other network devices, applications, or monitoring tools. This lack of communication can manifest as timeouts, failed requests, or unresponsiveness in status checks. Monitoring systems like Dynatrace rely on consistent communication to collect data and provide insights about host performance or availability. Hence, when communication issues are detected, it is a strong signal that the host may not be operational.

While increased performance metrics might suggest that a host is healthy or performing well, it does not necessarily indicate its status as online or offline. Network latency could signify issues within the communication path but does not directly mean the host is offline; it could also be due to other factors affecting the network. Additionally, self-healing capabilities refer to a system’s ability to recover from faults and issues and do not provide direct evidence of a host’s operational status.