Which two resources primarily limit the number of virtual machines a host can support?

Which two resources primarily limit the number of virtual machines a host can support?

• A. Disk space and bandwidth
• B. CPU and RAM
• C. GPU and RAM
• D. Network latency and I/O

Answer: (B)

The ability to run more virtual machines on a host is mainly limited by the physical CPU and memory resources. Each VM needs a slice of CPU power and its own allocation of RAM to operate, and the hypervisor must schedule vCPUs across the available cores and assign memory to every running VM. When the total CPU demand becomes too high or the physical RAM is exhausted, you can’t safely start additional VMs, and performance degrades as VMs contend for those resources. Disk space and bandwidth matter for storing VM images and moving data, but they don’t cap the number of VMs as directly as CPU and RAM. GPU resources are only a limiting factor if you’re specifically using GPU-accelerated VMs, and network latency or I/O affect performance more than the sheer count of VMs.

The ability to run more virtual machines on a host is mainly limited by the physical CPU and memory resources. Each VM needs a slice of CPU power and its own allocation of RAM to operate, and the hypervisor must schedule vCPUs across the available cores and assign memory to every running VM. When the total CPU demand becomes too high or the physical RAM is exhausted, you can’t safely start additional VMs, and performance degrades as VMs contend for those resources.

Disk space and bandwidth matter for storing VM images and moving data, but they don’t cap the number of VMs as directly as CPU and RAM. GPU resources are only a limiting factor if you’re specifically using GPU-accelerated VMs, and network latency or I/O affect performance more than the sheer count of VMs.