What is a key advantage of using a tap device for QEMU networking compared to user-mode networking?

The guest appears as a real host interface, allowing direct inbound connections and full network visibility

It is the only model that supports VirtIO network drivers

It provides automatic NAT and DHCP without any host configuration

It requires no root privileges to set up

A QEMU VM fails to boot with an error indicating that the qcow2 disk image is corrupted. The administrator has a recent backup of the image. What is the first step to attempt recovery before restoring from backup?

Convert the qcow2 image to raw format to bypass the corruption.

Run qemu-img check on the image to identify and possibly fix corruption.

Delete the image and recreate it from scratch.

Restore the backup immediately to minimize downtime.

A QA engineer is running a QEMU VM and needs to take a snapshot before testing a risky configuration change. The VM was started without a VNC or SPICE display. How can the engineer access the QEMU monitor to create the snapshot?

Use the QEMU Guest Agent to run the savevm command from inside the guest.

Press Ctrl+Alt+2 in the QEMU graphical window to switch to the monitor.

Run the savevm command directly on the host against the running QEMU process.

Connect to the monitor via a Unix socket by launching QEMU with -monitor unix:/tmp/monitor.sock,server,nowait and using socat.

Which QEMU device option would you use to attach a VirtIO network card to a guest?

-device virtio-net-pci,netdev=net0

-device virtio-blk-pci,drive=drive0

LPIC-3 Virtualization and Containerization

Domain 1Objective 3

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

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 16–20

16foundation · easy
What is a key advantage of using a tap device for QEMU networking compared to user-mode networking?
Select an answer first
17application · medium
A QEMU VM fails to boot with an error indicating that the qcow2 disk image is corrupted. The administrator has a recent backup of the image. What is the first step to attempt recovery before restoring from backup?
Select an answer first
18application · medium
A QA engineer is running a QEMU VM and needs to take a snapshot before testing a risky configuration change. The VM was started without a VNC or SPICE display. How can the engineer access the QEMU monitor to create the snapshot?
Select an answer first
19foundation · easy
Which QEMU device option would you use to attach a VirtIO network card to a guest?
Select an answer first
20foundation · easy
Which QEMU storage backend format supports features like snapshots, compression, and copy-on-write?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to LPIC-3-VIRTUALIZATION

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by Linux Professional Institute. “LPIC-3-VIRTUALIZATION” is a trademark of its owner, used for identification only.