In Huawei FusionCompute, which of the following operations can take effect immediately?

Question

Options

• AInstall Tools
• BDisk capacity reduction
• CDirectly read and write to the newly bound disk
• DDelete network card

• A
  5% (2)
• B
  17% (7)
• C
  7% (3)
• D
  71% (29)

Explanation

Deleting a network card (option D) takes effect immediately in FusionCompute because virtual NICs support hot-removal - the hypervisor can detach the virtual network device from a running VM without requiring a reboot or any guest OS action.

Why the distractors are wrong:

• A (Install Tools): Installing Huawei's Tools package (the guest agent, similar to VMware Tools) requires a VM restart to fully load its drivers and services.
• B (Disk capacity reduction): FusionCompute does not support online disk shrinking; reducing disk capacity requires the VM to be offline, and even then involves risk of data loss.
• C (Directly read/write newly bound disk): While a disk can be hot-attached, the guest OS must still initialize it (create a partition and format it) before it becomes usable - binding alone is not sufficient for immediate access.

Memory tip: Think "remove vs. add or install." Removing a virtual NIC is a clean, stateless operation the hypervisor handles instantly, whereas adding hardware (disk, NIC) or installing software always requires the guest OS to act - which typically means a restart or manual setup step.

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