Explain Hypervisors and Virtual Machines POWEREDGE-FOUNDATIONS-V2 Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   An administrator manages a cluster of Dell PowerEdge R750 servers running VMware ESXi. The cluster has 512 GB of RAM per host. The administrator plans to deploy VMs with the following characteristics: VM1 requires 128 GB RAM and is mission-critical; VM2 and VM3 each require 64 GB RAM and are less critical. The administrator wants to ensure that VM1 always has enough memory, even if the host is under memory pressure. What should the administrator configure?

   • ASet a memory reservation of 128 GB for VM1.
   • BEnable memory overcommitment on the host.
   • CUse vMotion to move VM1 to a host with more memory.
   • DSet a memory limit of 128 GB for VM1.
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   What is the primary role of a hypervisor on a Dell PowerEdge server?

   • ATo replace the operating system and run applications directly on the hardware
   • BTo provide a firewall and security services for the physical server
   • CTo provide a graphical interface for managing the server's BIOS settings
   • DTo manage physical hardware and allocate its resources to multiple virtual machines
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A security administrator is reviewing the isolation properties of VMs running on a Dell PowerEdge R650 with KVM. The administrator wants to ensure that a compromised VM cannot access the memory or storage of other VMs on the same host. What is the primary mechanism that provides this isolation?

   • AThe hypervisor uses a firewall to block inter-VM traffic.
   • BEach VM is assigned a unique IP address on the same virtual network.
   • CVMs are stored on separate physical disks.
   • DThe hypervisor enforces memory and device isolation between VMs.
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   How does a hypervisor allocate physical CPU resources to virtual machines?

   • AIt uses a random allocation that changes every second
   • BIt dedicates a physical core to each virtual machine permanently
   • CIt requires each VM to have its own physical CPU
   • DIt schedules virtual CPUs on physical cores, sharing them among VMs based on demand
   Reveal Solution Discussion Select an answer first
6. 25foundation · easy

   Which statement best describes the purpose of a hypervisor in a virtualized environment?

   • AIt provides a backup solution for virtual machines
   • BIt enables multiple operating systems to run on a single physical server by managing hardware resources
   • CIt monitors the physical health of the server hardware
   • DIt compiles application code into machine instructions
   Reveal Solution Discussion Select an answer first