A+ Virtualization Quiz: Can You Master Hypervisors & VMs?

1. A hypervisor allocates 4 vCPUs to a VM. What does this mean?

The VM can use up to 4 logical processors

The VM has 4 physical CPU cores

The host must have exactly 4 cores

The VM cannot exceed 4 GB of RAM

2. A VM is assigned 50% CPU priority on a 4-core host. What does this mean?

The VM receives priority access to 2 CPU cores when needed

The VM can only use 2 cores permanently

The VM always uses exactly 50% of host resources

The VM cannot exceed 50% of a single core

3. Which virtualization feature allows you to test changes and revert if needed?

Snapshots

Cloning

Bridging

Oversubscription

4. In a hypervisor, what does VRAM typically refer to?

Virtual RAM allocated to a VM

Video memory on the host GPU

Memory reserved for the hypervisor kernel

Physical RAM that cannot be virtualized

5. What is the main advantage of using thin provisioning for virtual disks?

Storage space is allocated only as needed

Virtual disks always perform faster

The VM cannot be migrated

Backups are no longer necessary

6. A VM is configured with 2 vCPUs but the host has 8 physical cores. What happens?

The VM can use up to 2 of the 8 cores

The VM automatically uses all 8 cores

The VM gets lower priority than physical processes

The hypervisor prevents the VM from running

7. Which of the following is NOT a typical function of a hypervisor?

Managing physical hardware directly

Allocating CPU resources to VMs

Creating and deleting virtual machines

Scheduling VM execution on physical CPUs

8. In NAT mode networking, what happens to traffic from a VM?

The hypervisor translates the VM's IP address before sending it out

The VM receives a public IP directly

Traffic is blocked from leaving the host

The VM uses the host's MAC address

9. What is the purpose of live migration in virtualization?

Moving a running VM from one host to another without downtime

Creating a permanent backup of a VM

Converting a physical server to a VM

Updating the hypervisor software

10. Which setting controls how much of the host's physical memory a VM can use?

Memory allocation

CPU priority

Disk quota

Network bandwidth

11. What is the primary difference between Type 1 and Type 2 hypervisors?

Type 1 runs directly on hardware; Type 2 runs on an OS

Type 1 is slower than Type 2

Type 2 cannot support multiple VMs

Type 1 requires more RAM than Type 2

12. What is meant by VM isolation?

VMs are prevented from accessing other VMs' resources and host

VMs cannot connect to any network

Only one VM can run at a time

VMs must use the same operating system

13. Which of these is a benefit of using virtual machines?

Multiple OS instances on one physical machine

Guaranteed faster performance than physical servers

Elimination of security vulnerabilities

Reduced licensing costs for all software

14. In a virtual machine, what does the virtual hard disk (VHD) represent?

A file or set of files that emulates physical storage

The RAM allocated to the VM

The physical CPU of the host

The network adapter settings

15. What does snapshot functionality in virtualization allow you to do?

Capture and restore a VM's state at a specific point in time

Permanently delete a VM

Increase VM processing speed

Merge multiple VMs into one

16. Which virtual switch type allows VMs to access external networks?

Internal

Bridged

NAT

Host-only

17. What is the purpose of virtual networking in a hypervisor?

Allow VMs to communicate with each other and external networks

Increase the speed of physical NICs

Replace the need for physical network cables

Reduce power consumption on the host

18. A VM requires 8 GB of RAM but the host has only 12 GB total. How should you allocate memory?

Allocate exactly 8 GB; reserve 4 GB for the host OS

Allocate all 12 GB to the VM

Allocate 6 GB to avoid overallocation

Use only half the requested RAM

19. What does CPU oversubscription mean in virtualization?

Allocating more vCPUs to VMs than physical cores available

Running VMs only on multi-core processors

Limiting CPU usage to physical core count

Disabling hyperthreading on the host

20. Which of the following is an example of a Type 1 hypervisor?

VMware Workstation

VirtualBox

Hyper-V

QEMU