VMware Certified Specialist - vSAN Practice Exam 2025: Latest Questions

A vSAN cluster uses a single VM Storage Policy with failures-to-tolerate (FTT)=1. An administrator wants to confirm what this policy means for availability. What does FTT=1 provide for a vSAN object?

A new vSAN cluster is being deployed. The administrator wants to ensure vSAN traffic is separated from VM traffic and can support jumbo frames end-to-end. Which configuration best meets this requirement?

An administrator needs to quickly determine whether a vSAN cluster has sufficient free capacity to remain compliant if a host fails. Which built-in view or metric should be checked first?

A vSAN datastore is reporting a large number of policy compliance warnings after a planned host maintenance. The administrator wants vSAN to automatically rebuild and rebalance objects after the host returns, with minimal manual intervention. Which action is most appropriate?

A company wants to use vSAN compression to reduce capacity usage for VM data, but wants to avoid deduplication due to concerns about flash endurance and failure domains. Which vSAN configuration aligns with this goal?

A vSAN cluster spans two racks. The customer requires that vSAN data remains available if an entire rack is lost. Which design and configuration best meets this requirement?

An administrator observes intermittent vSAN object access latency spikes. Skyline Health shows network connectivity is green. What is the most appropriate next step to validate whether congestion is occurring specifically on the vSAN network path?

A vSAN cluster is using storage policies with erasure coding for capacity efficiency. The administrator plans to place a host into maintenance mode for hardware replacement and wants to minimize rebuild time while keeping data accessible. Which maintenance mode option is most appropriate?

A customer needs to design a stretched vSAN cluster across two sites with a witness in a third location. They require site failure tolerance and want to avoid split-brain conditions. Which statement best describes the role of the witness host?

After replacing a failed capacity disk, an administrator notices that the disk is visible in ESXi but cannot be claimed by vSAN, and the disk shows an existing partition table/VMFS signature. What is the best practice action to make the disk usable for vSAN with minimal risk?

An administrator is preparing a vSAN host for disk group creation. Which requirement must be met for a storage device to be eligible as a cache device in a vSAN disk group?

A VM is deployed on a vSAN cluster using the default storage policy. The administrator wants to quickly identify which policy is currently applied to the VM. Where can this be verified?

A vSAN administrator needs to expand capacity quickly by adding a new host to an existing vSAN cluster. Which action is required to ensure the new host contributes storage to vSAN?

A stretched cluster is deployed with two data sites and a witness site. A network issue causes the witness to become unreachable from both data sites, but the data sites still have connectivity between them. What is the expected vSAN behavior for ongoing I/O?

After enabling vSAN encryption, an administrator notices that several VMs report policy compliance issues. The KMS is reachable and cluster encryption shows as enabled. What is the most likely cause?

A vSAN cluster uses a VM Storage Policy with RAID-5 (erasure coding). The administrator attempts to apply this policy to a new VM but receives an error that the policy requirements cannot be satisfied. The cluster has only three hosts. What best explains the failure?

A vSAN administrator wants to perform planned maintenance on a host and minimize the time needed to evacuate data while still keeping data accessible. Which maintenance mode option is typically the best choice?

A vSAN cluster is reporting intermittent latency spikes. The vSAN Health service shows that the network tests pass, and there are no disk failures. Which action is most appropriate to identify whether the spikes are caused by resynchronization activity?

A customer requires that two sets of VMs be protected from a single top-of-rack switch failure by separating them across racks. The vSAN cluster spans multiple racks. Which vSAN capability is best suited to meet this requirement?

A vSAN cluster experiences a host failure while running a storage policy with FTT=1 (RAID-1 mirroring). Shortly after, another host is placed into maintenance mode with 'No data migration.' Several VMs become inaccessible. What is the most likely explanation?

A vSAN cluster uses storage policies with different availability requirements. An administrator wants to quickly verify which vSAN objects are currently noncompliant with their assigned policies and why. Where should the administrator look first in vSphere Client?

A storage policy for a vSAN VM uses a RAID-5/6 (erasure coding) availability method. The administrator cannot select the erasure coding option when creating or editing the policy. Which cluster condition most commonly prevents selecting RAID-5/6 in the policy wizard?

An administrator is designing a stretched cluster and wants to ensure that vSAN uses the witness host only to maintain quorum and not to store full copies of VM data. Which statement best describes the role of the witness components in a stretched cluster?

After a recent hardware refresh, an administrator adds new capacity devices to each host and notices that resynchronizations are taking too long during normal operations. The business requires faster rebuilds but wants to avoid impacting VM latency during peak hours. Which action best balances rebuild speed and workload impact?

A vSAN cluster is configured with multiple fault domains (FDs). During a host failure event, several objects become inaccessible even though there appear to be enough total hosts remaining in the cluster. Which design issue most likely caused this outcome?