Run multiple isolated guest operating systems on one physical server.
Describe the main responsibility of the hypervisor.
Which statement is correct?
A hypervisor abstracts physical resources and schedules CPU, memory, and virtual devices for isolated virtual machines.
Detailed explanation
Correct. The hypervisor mediates resources and virtual devices for each VM.
Incorrect. PID namespaces are a container feature, not the hypervisor's main role.
Incorrect. Guest packages are managed inside the guest OS, not installed directly into the host.
Incorrect. Disk encryption is a separate storage-security function.
Try it yourself
An example you can run in a temporary verification environment.
test -d /sys/module/kvm && echo kvm-module-present || echo kvm-module-not-observedExpected result
KVM moduleの観測結果。構成変更は行わないKey points
- Hypervisor
- Resource allocation
- Virtual machine
Notes
- Environment: Linux kernelの読み取り専用状態確認
- Use a disposable VM or container when validating lifecycle commands.
- Exact command output can vary slightly by distribution and runtime version.
Foundation review
Identify the layer
Package management, process namespaces, disk encryption, and virtual-machine scheduling operate at different layers.
Check the side effect
When testing a hypervisor, inspect the host capability and guest resource configuration without changing a running workload.