Hypervisor Operations and Concepts JN0-214 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What is the primary role of a hypervisor in a cloud virtualization environment?

   • ATo replace the operating system on physical servers
   • BTo provide network connectivity between physical servers
   • CTo create and manage virtual machines by abstracting the underlying physical hardware
   • DTo provide a user interface for managing cloud resources
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   An administrator is creating a VM for a database server. The database requires high I/O performance and the data must persist across VM reboots. Which VM component is most important to configure correctly for this requirement?

   • AThe vCPU, because it determines processing speed.
   • BThe memory, because it stores data temporarily.
   • CThe virtual NIC, because it determines network throughput.
   • DThe virtual disk, because it stores the data and affects I/O performance.
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A company runs a database VM that must be available during a planned hardware maintenance on the host server. The VM's data is stored on shared storage. Which hypervisor operation allows the VM to continue running while the host is taken offline?

   • AUse memory overcommitment to run the VM on another host.
   • BLive migration to move the VM to another host without downtime.
   • CShut down the VM and start it on another host after maintenance.
   • DSnapshot the VM and restore it on another host after maintenance.
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   How does a hypervisor manage CPU resources among multiple VMs?

   • AIt allows VMs to directly access the physical CPU without any mediation
   • BIt assigns each VM a dedicated physical CPU core that it owns exclusively
   • CIt allocates CPU resources only when a VM is idle
   • DIt uses a scheduler to allocate CPU time slices to each VM based on its priority and demand
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   An administrator is troubleshooting a VM that is performing poorly. The VM has 2 vCPUs and 4 GB of memory. The administrator notices that the VM's CPU usage is consistently at 100% and the memory usage is low. Which VM component is likely the bottleneck?

   • AThe virtual disk, because it may be too slow.
   • BThe memory, because it is insufficient for the workload.
   • CThe virtual NIC, because it may be saturated.
   • DThe vCPUs, because the workload requires more processing power.
   Reveal Solution Discussion Select an answer first