CV0-003 · Question #46
An administrator has recently added a new host server to a private cloud environment. The host has two quad-core processors and 128GB of RAM. The server will have ten guest servers that require a…
The correct answer is A. Dynamic CPU. With only 8 physical cores available for 10 virtual servers each requiring 1 vCPU, dynamic CPU allocation lets the hypervisor schedule CPU time based on actual demand, which is feasible because 4 servers are offline during business hours.
Question
An administrator has recently added a new host server to a private cloud environment. The host has two quad-core processors and 128GB of RAM. The server will have ten guest servers that require a minimum of 1 CPU and 8GB of RAM per server. Four of the servers will only be used during off hours. Which of the following should the administrator implement to ensure that the guest servers have the proper resources?
Options
- ADynamic CPU
- BRedundancy
- CNIC Teaming
- DDynamic RAM
How the community answered
(37 responses)- A76% (28)
- B16% (6)
- C5% (2)
- D3% (1)
Why each option
With only 8 physical cores available for 10 virtual servers each requiring 1 vCPU, dynamic CPU allocation lets the hypervisor schedule CPU time based on actual demand, which is feasible because 4 servers are offline during business hours.
Dynamic CPU (CPU overcommitment with dynamic scheduling) allows a hypervisor to allocate more virtual CPUs than physical cores exist by time-slicing CPU resources based on active demand. Because 4 of the 10 guest servers only run during off hours, the peak concurrent CPU demand never exceeds the 8 available cores, making dynamic allocation the correct solution. Without this feature, the hypervisor would enforce a hard limit that prevents powering on all 10 VMs simultaneously.
Redundancy addresses high availability and failover, not resource distribution or overcommitment across guest servers.
NIC teaming aggregates multiple network adapters for bandwidth and failover; it has no effect on CPU or RAM resource allocation.
Dynamic RAM (memory ballooning/overcommitment) addresses memory allocation; the binding constraint here is CPU cores, not the 128 GB of RAM which already exceeds the 80 GB total minimum requirement.
Concept tested: Dynamic CPU overcommitment in hypervisor environments
Source: https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-resource-management/GUID-98BD5A8A-260A-494F-BAAE-74781F5C4B87.html
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