vSphere Performance and Scaling

An administrator wants to limit the amount of CPU resources a single VM can consume in a vSphere cluster. Which feature should be used?

A vSphere cluster has DRS enabled with 'Partially automate' mode. A VM is consistently showing high CPU ready time. The administrator wants to ensure the VM is automatically migrated to a less loaded host. What must be done?

A vSphere administrator is troubleshooting intermittent performance degradation on a production VM. The VM resides on a datastore backed by a storage array that is also serving several other clusters. The administrator needs to determine whether the latency is caused by the storage array or by the ESXi host's storage stack. Which esxtop metric should be compared to the array's reported latency to make this determination?

A vSphere cluster has 10 ESXi hosts configured with vSphere DRS. The administrator wants to ensure that a group of VMs running a latency-sensitive application are always placed on the same host. Which DRS rule should be created?

An administrator is troubleshooting a virtual machine that experiences intermittent performance issues. The VM is configured with 8 vCPUs and 32 GB memory. The administrator runs esxtop and sees that the %RDY for the VM is consistently above 20%. What does this indicate?

A vSphere administrator is deploying a new cluster of 5 ESXi hosts, each with 128 GB of RAM, and plans to run 50 VMs with 4 GB of RAM each. The administrator wants to ensure that the cluster can sustain the failure of one host without significantly impacting performance. Which configuration should the administrator implement to meet this requirement?

A vSphere administrator is deploying a new cluster of hosts that will run virtual desktop workloads. The administrator wants to reduce memory overcommitment pressure while keeping consolidation ratios reasonable. Which vSphere feature allows the host to reclaim memory by sharing identical memory pages across virtual machines?

A VM configured with 4 vCPUs shows high co-stop time in performance metrics. What does co-stop time indicate and which action should be taken to improve performance?

A vSphere administrator notices that a database VM's storage transactions complete quickly, but the application still reports sluggish response. In esxtop, the administrator sees the DAVG/cmd value for the VM's datastore consistently below 10 ms, yet the KAVG/cmd value for the same device is averaging 35 ms. Which conclusion is MOST accurate?

A vSphere administrator is scaling a cluster that runs a latency-sensitive trading application. The application VMs must consistently receive CPU time with minimal scheduling delay, while other workloads on the same hosts must still run. Which TWO configurations should the administrator apply to the trading VMs to reduce CPU scheduling delay? (Choose two.)

A vSphere administrator notices that one ESXi host in a DRS-enabled cluster is consistently running at 95% CPU utilization while other hosts average 40%. Which action should the administrator take to determine the cause?

An administrator is troubleshooting a VM that reports poor application responsiveness. In esxtop on the ESXi host, the VM shows a CPU ready time (READY) of 12 percent, and the host has more vCPUs assigned to running VMs than physical cores. Which factor is the PRIMARY contributor to this ready time?

An administrator notices that a critical VM running a database has a high CPU ready time average (over 20%) on a host with 2 physical CPUs (16 cores each). The host is running 6 VMs, each with 8 vCPUs. What is the most likely cause of the high ready time?

A company runs a critical application on a VM with 16 vCPUs and 128 GB RAM on an ESXi host that has 2 sockets (12 cores per socket, hyperthreading enabled) and 512 GB RAM. The application is known to scale well with multiple threads and memory bandwidth. Recently, a DRS migration moved the VM to a different host with the same CPU and memory configuration. After the migration, the application's performance dropped by 30%. The administrator checks vCenter and finds no other VMs on the destination host. esxtop shows the VM's CPU ready time is less than 1%, but the 'CPU cost' metric is high, and the 'Memory' section shows high values for 'Remote' memory accesses. What is the most likely cause of the performance drop?

A VM is experiencing high CPU ready time. The host has 16 physical cores and 20 vCPUs total across all VMs. Which action is MOST likely to reduce the CPU ready time on the VM?

A vSphere cluster with DRS enabled is experiencing an imbalance in resource utilization across hosts. DRS is set to 'Manual' mode. What action should the administrator take to resolve the imbalance?

An administrator is troubleshooting a VM that is running slowly. The VM has 4 vCPUs and 16 GB of memory. The host has 2 physical CPUs with 10 cores each, hyper-threading enabled. The administrator runs esxtop and sees that %RDY for the VM is consistently above 15%. Which action would most likely reduce the ready time?

A VM with a large memory footprint is experiencing high swap rates. The host has free memory but the swap rate is still high. What is the most likely cause?

An administrator is troubleshooting performance issues on a vSphere cluster. Which TWO metrics should be monitored to identify CPU ready time contention?

An administrator is configuring storage performance for a vSphere cluster that runs a mix of I/O-intensive databases and general-purpose VMs. The storage array is capable of providing high IOPS, but the administrator wants to ensure that the database VMs receive preferential treatment during periods of storage contention. The administrator has created a datastore cluster and enabled Storage DRS. Which additional configuration should be applied to meet this requirement?

A vSphere cluster has DRS enabled and hosts with unbalanced resource usage. Which DRS feature automatically migrates VMs to balance CPU and memory loads across hosts?

An administrator has a vSphere 7 cluster with vMotion enabled. They need to perform a vMotion of a VM from host1 to host2 while preserving the VM's memory state. The VM has a PCIe passthrough device assigned (NVMe controller). What should the administrator do before initiating the vMotion?

Which TWO storage performance best practices should be followed when scaling a vSphere environment using shared storage? (Choose two.)

A resource pool has the following configuration: CPU shares = 4000, reservation = 2 GHz, limit = 4 GHz. The parent cluster has 10 GHz total CPU capacity. Another resource pool contains VMs with higher shares. If both resource pools contend for CPU, which statement is TRUE?

A vSphere administrator is designing a new cluster for a workload that requires high memory bandwidth and low latency. The physical hosts have 512 GB of RAM each, and the VMs are expected to have large memory footprints. The administrator wants to ensure that memory overcommitment is minimized and that VM memory is backed by physical RAM as much as possible. Which configuration should be applied to the VMs to achieve this?

A company has a cluster of 4 ESXi hosts. They want to ensure that virtual machines are automatically distributed evenly across hosts based on CPU and memory load. Which feature should be enabled on the cluster?

Refer to the exhibit. A distributed virtual switch port shows dropped Rx packets and CRC errors. What is the most likely cause?

Which THREE factors should be considered when sizing a host cluster for a VDI environment with 1000 desktops? (Choose three.)

A vSphere administrator is evaluating the performance of a new cluster. The administrator notices that the CPU ready time for a particular VM is consistently above 10%. The host has 24 physical cores and is running 30 VMs, each with 2 vCPUs. Which action would most directly reduce the CPU ready time for this VM?

Which two factors most directly influence vSphere NUMA scheduling decisions for a VM? (Choose two.)

A company's vSphere environment has multiple clusters with varying workloads. The operations team notices that one cluster consistently shows high CPU ready times on several hosts. Which action should be taken to address this performance issue?

Which TWO actions can help reduce network latency for a latency-sensitive VM in a vSphere environment? (Choose two.)

Refer to the exhibit. The vSphere administrator observes that vm1 has a %RDY value of 20.5. What is the most likely cause of this high ready time?

An ESXi host experiences high memory ballooning in virtual machines. The administrator checks the host's memory metrics and sees a high swap rate. The host has 512 GB of memory, and the VMs are configured with memory reservations. Which configuration is most likely contributing to the excessive swapping?

Which THREE techniques are recommended to improve virtual machine network performance in a vSphere environment? (Select three.)

An administrator observes that a VM with 4 vCPUs running on a host with hyperthreading enabled shows high %CSTP (co-stop) values in esxtop. What is a likely cause?

Based on the exhibit, which VM (indicated by the row) is most likely experiencing severe CPU scheduling contention?

Which tool provides real-time performance monitoring at the ESXi host level, including CPU, memory, network, and storage metrics?

A vSphere environment experiences periodic performance degradation during peak business hours. Analysis shows that one ESXi host's CPU ready time for a specific mission-critical VM is consistently above 20%. Which corrective action should be taken first?

A vSphere administrator is scaling a cluster by adding new ESXi hosts and VMs. Which two actions help ensure that performance continues to meet requirements as the environment grows? (Choose two.)

Which TWO are correct statements about vSphere resource pools? (Select two.)

An administrator is analyzing performance data for a vSphere cluster and wants to identify VMs that are experiencing memory pressure. Which two metrics from esxtop or vCenter performance charts reliably indicate that a VM is actively reclaiming memory due to contention? (Choose two.)

Which TWO actions are effective in reducing CPU ready time on a vSphere host that is heavily overcommitted on CPU? (Choose two.)

Arrange the steps to add an existing virtual machine to a vCenter Server inventory.

A vSphere administrator is troubleshooting a VM that is experiencing excessive disk latency. The VM is on a datastore accessed via NFS over a 1GbE network. The host shows high network utilization. Which action should be taken to improve performance?

Refer to the exhibit. The performance data shows MEMCTL at 5% and SWPOUT at 2%. What does this indicate about the host?

Which THREE vSphere features directly contribute to performance and scaling of virtualized workloads? (Select THREE.)

A vSphere administrator is troubleshooting performance issues in a cluster with 4 ESXi hosts, each with 2 sockets of 16-core CPUs (32 logical processors per host). The cluster runs 80 VMs, each with 4 vCPUs, and users report slow application response. The administrator observes high CPU ready time on the VMs. Which TWO actions would be most effective in reducing CPU ready time while maintaining performance? (Choose two.)