Hypervisor Operations and Concepts JN0-214 Practice Questions (Page 2)

Questions 6–10

1. 6expert · hard

   A company runs a Type 1 hypervisor host with 32 physical cores and 128 GB of RAM. They have 10 VMs, each with 4 vCPUs and 16 GB of memory. The VMs run a mix of workloads: some are CPU-intensive, some are memory-intensive, and some are idle. The administrator notices that the host's memory usage is consistently at 95%, while CPU usage is only 40%. The VMs are experiencing memory pressure, leading to performance degradation. The administrator needs to resolve the memory pressure without adding physical memory. Which approach is most effective?

   • AIncrease the memory allocation for each VM to eliminate memory pressure.
   • BDisable memory overcommitment to prevent the hypervisor from allocating more memory than physically available.
   • CUse live migration to move some VMs to another host.
   • DEnable memory overcommitment and rely on the hypervisor's balloon driver to reclaim memory from idle VMs.
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   How does virtualization provide isolation between VMs running on the same host?

   • AVMs are assigned separate physical network interfaces
   • BVMs are automatically encrypted to prevent data leakage
   • CEach VM has its own dedicated physical CPU and memory
   • DVMs are prevented from accessing each other's memory and storage without authorization
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4. 8application · medium

   A company wants to consolidate multiple underutilized physical servers into a single physical host to reduce hardware costs. They are concerned about isolating the workloads from each other for security and fault tolerance. Which virtualization benefit directly addresses this concern?

   • AResource efficiency, because multiple VMs share the same physical hardware.
   • BIsolation, because each VM runs in its own isolated environment.
   • CSnapshots, because they allow rollback of VM changes.
   • DLive migration, because VMs can be moved between hosts.
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   A company runs a critical application on a VM that must have zero downtime during a scheduled maintenance window. The VM's data is stored on local storage on the host. The administrator plans to perform maintenance on the host, which requires a reboot. The company has another host available with sufficient resources. Which approach should the administrator take to meet the zero-downtime requirement?

   • ATake a snapshot of the VM and restore it on the other host after maintenance.
   • BPerform a live migration of the VM to the other host, but first move the VM's virtual disk to shared storage.
   • CUse memory overcommitment to run the VM on the other host without moving the disk.
   • DShut down the VM, copy the virtual disk to the other host, and start the VM there.
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   An administrator is creating a VM for a web server. The VM needs to store the OS and application files, and the administrator wants to ensure the storage can grow as the web server's data increases. Which VM component should the administrator configure to meet this requirement?

   • AA virtual NIC with a high bandwidth setting.
   • BA dynamic virtual disk that starts small and grows as data is written.
   • CA vCPU with multiple cores to improve processing speed.
   • DA fixed-size virtual disk that is pre-allocated to the maximum expected size.
   Reveal Solution Discussion Select an answer first