VMware Certified Professional - VMware vSphere Foundation Administrator Advanced Practice Exam: Hard Questions 2025

An administrator is troubleshooting a vSphere HA cluster where a host with 8 VMs experienced an isolation event. The host can ping its default gateway but cannot communicate with other ESXi hosts on the management network. The isolation response is set to 'Power off and restart VMs' and das.isolationaddress0 is configured as 8.8.8.8. What will be the outcome for the VMs running on the isolated host?

A vSphere administrator notices that DRS is not migrating VMs away from a heavily loaded host (85% CPU utilization) even though other hosts in the cluster have 30% CPU utilization. DRS is set to Fully Automated with migration threshold at the default level. Upon investigation, the administrator finds that all VMs have CPU reservations totaling 90% of the heavily loaded host's CPU capacity. What is the MOST likely reason DRS cannot balance the cluster effectively?

An organization is designing a vSphere cluster with vSAN for a mission-critical application requiring FTT=2 with RAID-1 (Mirroring). The cluster will have 6 hosts across 3 fault domains (2 hosts per fault domain). Each VM requires 500GB of storage. What is the minimum number of disk groups required across the cluster, and what constraint must be considered?

During a vCenter Server High Availability (VCHA) failover test, the Active node becomes unresponsive. The Passive node promotes itself to Active, but the Witness node is also unreachable due to a network partition. What behavior should the administrator expect from the VCHA cluster, and what is the PRIMARY risk in this scenario?

A vSphere administrator is configuring Network I/O Control (NIOC) on a distributed switch with four uplinks. The environment has three traffic types: vMotion (shares: 50), Management (shares: 25), and VM traffic (shares: 25). During a sustained period where all traffic types are simultaneously saturating the uplinks, vMotion traffic is measured at only 40% of total bandwidth instead of the expected 50%. What is the MOST likely cause?

An administrator configures a VM with a 100GB thick-provisioned eager zeroed disk and sets a memory limit of 4GB while the VM is configured with 8GB of memory. The host has 128GB of physical RAM with 64GB currently in use by other VMs. When the VM is powered on, it fails to start with an insufficient resources error. What is the MOST likely cause of this failure?

A vSphere environment uses a distributed switch with Link Aggregation Control Protocol (LACP) configured with two LAG groups. LAG1 has 4 uplinks in active mode using source/destination IP hash, and LAG2 has 2 uplinks in passive mode. After a physical switch failure causes two uplinks in LAG1 to go down, what will be the impact on VM network connectivity and load balancing?

An administrator is investigating why a VM with 4 vCPUs is experiencing poor performance despite the host having sufficient physical CPU resources. The VM is configured with a CPU reservation of 8GHz, and the host has 2 physical CPUs with 8 cores each running at 2.5GHz (40GHz total). Performance charts show CPU ready time averaging 15%. What is the MOST likely root cause?

A company is implementing vSphere Trust Authority for their regulated workload environment. After configuring the Trust Authority Cluster and enabling Attestation, several VMs fail to power on with trust verification errors. The administrator confirms that the Trust Authority services are running and the ESXi hosts have TPM 2.0 enabled. What should the administrator verify NEXT to resolve the issue?

A vSphere cluster with DRS and Storage DRS enabled is experiencing performance issues. Investigation reveals that Storage DRS is recommending migrations, but DRS is generating recommendations to move VMs back to hosts with local storage access, effectively preventing Storage DRS from optimizing storage load. Storage DRS is set to fully automated with aggressive threshold, while DRS is set to fully automated with default threshold. What is the BEST approach to resolve this conflict?