ISC2 Certified Cloud Security Professional (CCSP) Practice Question
Your team operates a private IaaS cluster. One host shows periodic performance degradation, and you suspect excessive heat is forcing the CPU to throttle. You already collect CPU and disk statistics from inside each guest OS, but you also need continuous readings for the host's temperature and fan speed without installing any new software on either the hypervisor or the VMs. Which monitoring method best satisfies this requirement?
Poll the server's baseboard management controller via its IPMI/iLO/iDRAC out-of-band interface for sensor data.
Install and aggregate SNMP agents inside each guest VM to report hardware sensor readings.
Deploy application performance monitoring (APM) agents within tenant workloads to capture host temperature metrics.
Forward hypervisor kernel and system logs to the SIEM and rely on log analysis for thermal events.
The baseboard management controller (BMC) that exposes the Intelligent Platform Management Interface (IPMI) or a similar out-of-band interface (such as iLO or iDRAC) provides real-time sensor data for temperature, fan speed, voltage, and other health indicators. Because the BMC operates independently of the main system CPU and operating system, polling it does not require agents on the hypervisor or guest VMs and does not consume host resources needed by tenant workloads.
SNMP agents or APM tools installed inside guest VMs cannot see physical host sensors; they only report metrics from the virtualized environment. Forwarding hypervisor syslog events may alert you after a thermal fault occurs, but it does not give the continuous, proactive sensor data required for early detection. Therefore, querying the BMC via IPMI/iLO/iDRAC is the most appropriate choice.
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ISC2 Certified Cloud Security Professional (CCSP)
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