20+ practice questions focused on Full Virtualization — one of the most tested topics on the LPIC-3 Exam 305: Virtualization and Containerization (305-300) (305-300) exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Full Virtualization PracticeYou need to migrate a running QEMU VM to a remote host using live migration. Which command-line argument for QEMU-KVM initiates a migration to a target host at 192.168.1.50 on port 4444?
Explanation: QEMU's live migration is initiated with the -migrate option, which takes a URI describing the destination. The URI tcp:192.168.1.50:4444 tells QEMU to migrate the running VM over TCP to host 192.168.1.50 on port 4444. The target host must be started with the matching -incoming tcp:0.0.0.0:4444 (or similar) to accept the migration stream.
When migrating a Libvirt domain using 'virsh migrate --live', which option must be specified to ensure the guest's memory state is copied over the network?
Explanation: The --live option manages the memory transfer, but the --copy-storage-all or --block-incremental option is required if the disks are not on shared storage.
You are troubleshooting a libvirt network issue where the virtual machines cannot reach the external gateway. The virtual network uses a NAT configuration. Which file would you inspect to verify the iptables rules generated by libvirt for this network?
Explanation: libvirt stores the persistent XML definition of each virtual network under /etc/libvirt/qemu/networks/, with default.xml being the definition for the default NAT network. This file contains the <forward mode='nat'/> element and any <ip> DHCP ranges that libvirt uses to program iptables. Inspecting it lets you verify the intended NAT configuration that libvirt translates into iptables rules.
You need to create a snapshot of a QCOW2 disk image without stopping the virtual machine. Which qemu-img sub-command should be used?
Explanation: virsh snapshot-create-as with --disk-only creates a live disk snapshot of a running domain by writing a new overlay file while the VM keeps running, which is exactly what is needed for a QCOW2 image without downtime. This leverages libvirt's snapshot API against the QEMU/KVM backend. The other options either create a static overlay manually, snapshot only internal state, or use an unrelated checkpoint mechanism.
You are performing a live migration of a VM using libvirt. The source and destination hosts share a common storage pool (NFS). Which option should be used with 'virsh migrate' to ensure only the memory state is transferred?
Explanation: When source and destination hosts share storage (e.g., an NFS pool), the disk image is already accessible to both, so only the VM's memory state and device state need to be transferred. The '--copy-storage-none' option tells virsh migrate not to copy any storage, which is exactly the shared-storage scenario. This minimizes migration time and network traffic.
+15 more Full Virtualization questions available
Practice all Full Virtualization questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Full Virtualization. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Full Virtualization questions on the 305-300 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Full Virtualization is tested as part of the LPIC-3 Exam 305: Virtualization and Containerization (305-300) (305-300) blueprint. Practicing with targeted Full Virtualization questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Full Virtualization is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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