A QEMU VM with a raw disk image reports 'No space left on device' even though the host has plenty of free space. What is the most likely cause?

The raw image was pre-allocated to a fixed size and is now full

The host's disk is actually full

The VirtIO storage driver is not installed

A qcow2 image is corrupted and the VM fails to boot. Which QEMU tool can be used to check and repair the image?

qemu-img check -r all disk.qcow2

qemu-nbd --connect=/dev/nbd0 disk.qcow2

qemu-system-x86_64 -drive file=disk.qcow2

What is the primary purpose of the QEMU Guest Agent?

To allow the host to execute commands inside the guest OS via the QEMU monitor

To provide VirtIO drivers for the guest OS

To manage disk snapshots from within the guest

To enable KVM hardware acceleration

In a QEMU command line, what does the -netdev option do?

It configures the host's physical network interface

It defines a network backend (e.g., user, tap) that can be attached to a guest NIC

It sets the MAC address of the guest's network card

It enables the VirtIO network driver in the guest

Which QEMU command-line option is used to specify the amount of memory for the guest?

-drive file=disk.img,format=qcow2

LPIC-3 Virtualization and Containerization

Domain 1Objective 3

351.3 QEMU (weight: 4) LPIC-3-VIRTUALIZATION Practice Questions (Page 2)

Part of the Topic 351: Full Virtualization domain, which makes up ~39% of our current practice bank. Linux Professional Institute does not publish an official question count, but from its 90-minute exam (~35–60 total, ~14–23 in this domain), expect 3–5 from this objective — we provide 34 practice questions to prepare you well beyond it. (estimate)

34questions here

7free pages

12concepts

Questions 6–10

6foundation · easy
A QEMU VM with a raw disk image reports 'No space left on device' even though the host has plenty of free space. What is the most likely cause?
Select an answer first
7foundation · easy
A qcow2 image is corrupted and the VM fails to boot. Which QEMU tool can be used to check and repair the image?
Select an answer first
8foundation · easy
What is the primary purpose of the QEMU Guest Agent?
Select an answer first
9foundation · easy
In a QEMU command line, what does the -netdev option do?
Select an answer first
10foundation · easy
Which QEMU command-line option is used to specify the amount of memory for the guest?
Select an answer first

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