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CV0-003 · Question #84

When a customer requests a VM to perform at higher levels the administrator should (Select two):

The correct answer is A. increase the VMs vRAM. D. increase the VMs vCPU count. When a VM needs to perform at higher levels, the administrator should scale its virtual compute resources - specifically virtual RAM and virtual CPU count - to meet increased workload demands.

Operations

Question

When a customer requests a VM to perform at higher levels the administrator should (Select two):

Options

  • Aincrease the VMs vRAM.
  • Bincrease RAM on the host.
  • Cmigrate the VM to a faster online host.
  • Dincrease the VMs vCPU count.
  • Eincrease disk space.

How the community answered

(53 responses)
  • A
    94% (50)
  • C
    2% (1)
  • E
    4% (2)

Why each option

When a VM needs to perform at higher levels, the administrator should scale its virtual compute resources - specifically virtual RAM and virtual CPU count - to meet increased workload demands.

Aincrease the VMs vRAM.Correct

Increasing a VM's vRAM allows it to hold more data in memory, reducing paging and improving application throughput. Paired with increasing vCPU count (D), which gives the VM access to more parallel processing threads, these two changes directly address the VM's compute capacity without requiring host-level changes or migration.

Bincrease RAM on the host.

Increasing RAM on the host improves the host's overall capacity but does not directly allocate more resources to the specific VM that needs higher performance.

Cmigrate the VM to a faster online host.

Migrating to a faster host may help if the current host is the bottleneck, but it is disruptive and not the first corrective action; tuning the VM's own resource allocation is preferred.

Dincrease the VMs vCPU count.Correct

Increasing vCPU count gives the VM more virtual processors to execute threads concurrently, directly improving processing performance for CPU-bound workloads without affecting other VMs on the host.

Eincrease disk space.

Increasing disk space addresses storage capacity constraints, not compute performance, and would not improve a VM's processing speed or responsiveness.

Concept tested: VM vertical scaling via vCPU and vRAM allocation

Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vm_admin.doc/GUID-B3F25AC5-3F6D-4B3E-A87A-83CB3E56D8E1.html

Topics

#VM performance#vCPU#vRAM#resource allocation

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