220-802 · Question #852
Which of the following resources is MOST important for a network server running a virtual machine and guest operating systems?
The correct answer is D. Multi-core CPU. Running multiple virtual machines with guest operating systems requires concurrent processing of many threads, making a multi-core CPU the most critical hardware resource for a virtualization host.
Question
Which of the following resources is MOST important for a network server running a virtual machine and guest operating systems?
Options
- ARedundant power supplies
- BMemory speed
- CRAID type used
- DMulti-core CPU
How the community answered
(54 responses)- A2% (1)
- B4% (2)
- C2% (1)
- D93% (50)
Why each option
Running multiple virtual machines with guest operating systems requires concurrent processing of many threads, making a multi-core CPU the most critical hardware resource for a virtualization host.
Redundant power supplies improve uptime and fault tolerance but do not directly affect the performance of VM workloads.
Memory speed has a smaller impact than the total number of CPU cores available; RAM capacity matters more than speed for virtual machine hosts.
The RAID type affects storage redundancy and I/O performance, but storage throughput is typically not the primary bottleneck when running multiple guest operating systems.
Each virtual machine and its guest OS requires dedicated CPU resources to execute processes simultaneously. A multi-core CPU allows the hypervisor to schedule VM workloads across separate physical cores, preventing contention and enabling true parallel execution. Without sufficient CPU cores, VMs compete for a single execution unit, causing severe performance degradation across all guests.
Concept tested: Multi-core CPU requirements for virtualization hosts
Source: https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/plan/plan-hyper-v-scalability-in-windows-server
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