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How does a hypervisor manage resource allocation among multiple virtual machines, and what techniques can it use to ensure fair resource distribution?Group of answer choices• (e) The hypervisor uses a fixed allocation policy, which assigns a set amount of resources to each VM regardless of workload changes.• (b) The hypervisor uses dynamic resource allocation, overcommitting physical resources to maximize utilization but potentially leading to resource contention.• (c) A hypervisor manages resource allocation through techniques like CPU scheduling, memory ballooning, and I/O throttling. These techniques help ensure fair resource distribution by dynamically adjusting resources based on VM demand and prioritizing critical workloads• (a) The hypervisor assigns fixed resources to each VM at startup and does not adjust them during runtime, ensuring predictable performanced) The hypervisor duplicates resources for each VM to avoid contention, but this approach limits scalability.

Question

How does a hypervisor manage resource allocation among multiple virtual machines, and what techniques can it use to ensure fair resource distribution?Group of answer choices• (e) The hypervisor uses a fixed allocation policy, which assigns a set amount of resources to each VM regardless of workload changes.• (b) The hypervisor uses dynamic resource allocation, overcommitting physical resources to maximize utilization but potentially leading to resource contention.• (c) A hypervisor manages resource allocation through techniques like CPU scheduling, memory ballooning, and I/O throttling. These techniques help ensure fair resource distribution by dynamically adjusting resources based on VM demand and prioritizing critical workloads• (a) The hypervisor assigns fixed resources to each VM at startup and does not adjust them during runtime, ensuring predictable performanced) The hypervisor duplicates resources for each VM to avoid contention, but this approach limits scalability.

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Solution

A hypervisor manages resource allocation among multiple virtual machines (VMs) through a combination of fixed and dynamic allocation policies, as well as specific resource management techniques.

  1. Fixed Allocation Policy: In this approach, the hypervisor assigns a set amount of resources to each VM at startup and does not adjust them during runtime. This ensures predictable performance but may not be the most efficient use of resources if the VM's workload changes.

  2. Dynamic Resource Allocation: The hypervisor can also use dynamic resource allocation, which overcommits physical resources to maximize utilization. This can lead to higher overall system performance, but it may also lead to resource contention if multiple VMs need the same resources at the same time.

  3. Resource Management Techniques: To ensure fair resource distribution and manage contention, the hypervisor uses techniques like CPU scheduling, memory ballooning, and I/O throttling. These techniques dynamically adjust resources based on VM demand and prioritize critical workloads. For example, CPU scheduling can allocate CPU time to VMs based on their priority and need, while memory ballooning can temporarily borrow unused memory from less critical VMs to give to more critical ones.

  4. Resource Duplication: In some cases, the hypervisor may duplicate resources for each VM to avoid contention. However, this approach can limit scalability because it requires more physical resources.

In summary, a hypervisor manages resource allocation among multiple VMs using a combination of allocation policies and resource management techniques to ensure fair distribution and manage contention.

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