NCP Monitoring, Maintenance, and Troubleshooting 3 — Questions and Answers
Question 1: Which NCC plugin checks that all CVMs can communicate with each other over the backplane network?
- cvm_startup_dependency_check
- cluster_services_status_check
- cvm_kernel_deconfig_check
- network_connectivity_check (Correct answer)
Correct answer: network_connectivity_check
The network_connectivity_check NCC plugin verifies backplane network reachability between all CVMs in the cluster.
Question 2: After applying a hypervisor patch, VMs on one host fail to vMotion/live migrate. Which Prism alert category would surface this issue?
- Storage
- Network
- Compute (Correct answer)
- Data Protection
Correct answer: Compute
Live migration failures are classified under Compute alerts in Prism since they relate to host and VM compute resources.
Question 3: A cluster running AHV shows high storage latency only during backup windows. What is the BEST initial diagnostic step?
- Increase the storage pool size
- Review I/O prioritization settings and check if backup tasks are throttled (Correct answer)
- Reboot the affected CVMs sequentially
- Disable compression to reduce CPU overhead
Correct answer: Review I/O prioritization settings and check if backup tasks are throttled
Reviewing I/O prioritization and throttle settings determines if backup workloads are competing for storage bandwidth without proper QoS.
Question 4: Which command on a CVM lists all currently running Nutanix services and their status?
- cluster status
- genesis status (Correct answer)
- allssh 'ps aux'
- ncli cluster list-services
Correct answer: genesis status
Running 'genesis status' on a CVM displays the status of all Nutanix services managed by the genesis process.
Question 5: Prism Central reports a VM with an anomaly score spike. What does an anomaly score represent in Prism Pro?
- The percentage of CPU cycles used by malicious processes
- A behavioral deviation score based on machine-learning baselines for VM metrics (Correct answer)
- The number of failed login attempts to the VM console
- A risk score calculated from NCC check failures
Correct answer: A behavioral deviation score based on machine-learning baselines for VM metrics
Prism Pro's anomaly detection uses machine learning to baseline VM behavior and flags deviations as anomaly scores.
Question 6: Which Nutanix tool allows an administrator to run a pre-upgrade compatibility check before upgrading AOS?
- NCC Health Check
- 1-Click Upgrade pre-check
- Life Cycle Manager (LCM) pre-check (Correct answer)
- Prism Central Upgrade Advisor
Correct answer: Life Cycle Manager (LCM) pre-check
Life Cycle Manager (LCM) performs automated pre-upgrade compatibility and health checks before applying AOS upgrades.
Question 7: A Nutanix administrator observes that one node's SSD shows a 'Warning' health status in Prism. What is the recommended immediate action?
- Immediately power off the node
- Run NCC disk_online_check and review SMART data for the SSD (Correct answer)
- Replace the SSD without running diagnostics
- Increase the replication factor to 3 cluster-wide
Correct answer: Run NCC disk_online_check and review SMART data for the SSD
Running NCC's disk_online_check and reviewing SMART data provides diagnostic evidence before taking any hardware action.
NCP Monitoring, Maintenance, and Troubleshooting 3
Which NCC plugin checks that all CVMs can communicate with each other over the backplane network?