A systems administrator is provisioning a host server using a Type 1 hypervisor to host fo… — CompTIA A+ (Core 1 & Core 2)

A systems administrator is provisioning a host server using a Type 1 hypervisor to host four identical database guest virtual machines (VMs). Each guest VM is configured to require $8\text{ GB}$ of RAM, $2\text{ vCPUs}$ , and $120\text{ GB}$ of dedicated storage space. The hypervisor vendor mandates reserving a minimum of $4\text{ GB}$ of host physical RAM and $2$ physical CPU cores exclusively for host management overhead. RAM overcommitment is strictly disabled in the hypervisor policy to guarantee performance. Which of the following represents the minimum physical host RAM and physical CPU core capacity required to support this deployment without resource starvation?

$36\text{ GB}$ of physical RAM and $10$ physical CPU coresAnswer
B
$32\text{ GB}$ of physical RAM and $8$ physical CPU cores
C
$36\text{ GB}$ of physical RAM and $5$ physical CPU cores
D
$28\text{ GB}$ of physical RAM and $6$ physical CPU cores

Answer

The minimum host requirement is

36\text{ GB}

of physical RAM and

10

physical CPU cores.

To calculate the total host capacity required, add the resources needed by all guest virtual machines to the hypervisor's minimum host overhead reserve. Four guest VMs requiring

8\text{ GB}

of RAM each equal

32\text{ GB}

of RAM, plus

4\text{ GB}

for host reserve, giving

36\text{ GB}

of total physical RAM. Four guest VMs requiring

2\text{ vCPUs}

each equal

8

CPU cores, plus

2

physical cores for host reserve, giving

10

physical CPU cores.

Step-by-Step Solution

Calculate total resource requirements for guest VMs

Guest RAM

= 4 \times 8\text{ GB} = 32\text{ GB}

; Guest vCPUs

= 4 \times 2 = 8\text{ vCPUs}

(requiring

8

physical cores when uncommitted).

Four virtual machines each require dedicated RAM and vCPU resources.

Add host hypervisor overhead requirements

Total RAM

= 32\text{ GB} + 4\text{ GB} = 36\text{ GB}

; Total CPU Cores

= 8 + 2 = 10\text{ physical cores}

Host hypervisors require reserved physical resources to manage memory, hardware interrupts, and system operations without starving guest VMs.

Key Concept

Virtual Machine Host Capacity Planning and Hypervisor Resource Overhead

Estimated Time:2m 0s

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