108 real Proxmox VE questions from the Virtualization bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is Proxmox VE 9.0 base?
Junior
A.vzdump modes: snapshot is live with minimal pause, suspend freezes briefly, stop guarantees consistency by powering off.
B.A system container in Proxmox sharing the host kernel, lighter than a VM and managed alongside QEMU guests in the same interface
C.The Proxmox VE 9.0 release, built on Debian 13 'Trixie' with Linux kernel 6.14, QEMU 10 and LXC 6, released August 2025
D.A dedicated deduplicating, incremental backup server that Proxmox VE targets for efficient, encrypted VM and container backups
A.Proxmox VE 9.0 base — The requirement that a majority of Proxmox cluster votes be present before the cluster allows changes, preventing split-brain
B.Proxmox VE 9.0 base — A Proxmox VE 9 software-defined networking feature for building routed underlay fabrics (OpenFabric, OSPF) between nodes to carry VXLAN/EVPN overlays
C.Proxmox VE 9.0 base — The Proxmox VE 9.0 release, built on Debian 13 'Trixie' with Linux kernel 6.14, QEMU 10 and LXC 6, released August 2025
D.Proxmox VE 9.0 base — Reclaims unused guest RAM dynamically when the minimum memory is set below the assigned amount.
5. Which term means: "The cluster communication layer in Proxmox that keeps configuration in sync and maintains quorum across nodes via redundant rings"?
11. Which term means: "An external corosync vote provider (often a Raspberry Pi or small VM) that supplies a tie-breaking vote for two-node Proxmox clusters"?
A.QDevice — Distributed block storage in Proxmox where VM disks are RADOS block-device objects replicated across the Ceph cluster for shared, resilient storage
B.QDevice — A Proxmox VE 9 capability providing snapshots as volume chains on thick LVM over iSCSI/Fibre Channel SANs, removing a long-standing limitation
C.QDevice — Proxmox VE 9 HA rules pinning guests to nodes and keeping or spreading guests, replacing legacy HA Groups.
D.QDevice — An external corosync vote provider (often a Raspberry Pi or small VM) that supplies a tie-breaking vote for two-node Proxmox clusters
14. Which term means: "Proxmox HA self-fencing where a node whose HA services lose quorum is reset by a hardware or software watchdog before VMs are restarted elsewhere"?
A.Watchdog fencing — A Proxmox clone that references a template's base disk and only stores changes, saving space for many similar VMs
B.Watchdog fencing — Proxmox HA self-fencing where a node whose HA services lose quorum is reset by a hardware or software watchdog before VMs are restarted elsewhere
C.Watchdog fencing — A clone sharing the template base disk via a delta layer, saving space but tied to the template.
D.Watchdog fencing — The requirement that a majority of Proxmox cluster votes be present before the cluster allows changes, preventing split-brain
17. Which term means: "Distributed block storage in Proxmox where VM disks are RADOS block-device objects replicated across the Ceph cluster for shared, resilient storage"?
A.Ceph RBD — The Proxmox VE 9.0 release, built on Debian 13 'Trixie' with Linux kernel 6.14, QEMU 10 and LXC 6, released August 2025
B.Ceph RBD — Proxmox's scheduled asynchronous send/receive of ZFS datasets to another node, giving cheap near-real-time DR without shared storage
C.Ceph RBD — Distributed block storage in Proxmox where VM disks are RADOS block-device objects replicated across the Ceph cluster for shared, resilient storage
D.Ceph RBD — Proxmox VE 9 node and resource affinity rules that pin or co-locate/separate VMs and containers, replacing the older HA Groups
20. Which term means: "Proxmox's scheduled asynchronous send/receive of ZFS datasets to another node, giving cheap near-real-time DR without shared storage"?
A.ZFS replication — An external corosync vote provider (often a Raspberry Pi or small VM) that supplies a tie-breaking vote for two-node Proxmox clusters
B.ZFS replication — The Proxmox VE 9.0 release, built on Debian 13 'Trixie' with Linux kernel 6.14, QEMU 10 and LXC 6, released August 2025
C.ZFS replication — Injects hostname, SSH keys, users, and network config into a cloned VM at first boot.
D.ZFS replication — Proxmox's scheduled asynchronous send/receive of ZFS datasets to another node, giving cheap near-real-time DR without shared storage
A.A Proxmox VE 9 software-defined networking feature for building routed underlay fabrics (OpenFabric, OSPF) between nodes to carry VXLAN/EVPN overlays
B.Proxmox VE 9 ships on Debian 13 'Trixie' with kernel 6.14, QEMU 10, and ZFS 2.3.
C.Proxmox VE 9 adds VM snapshots on LVM over Fibre Channel and iSCSI SANs.
D.The requirement that a majority of Proxmox cluster votes be present before the cluster allows changes, preventing split-brain
23. Which term means: "A Proxmox VE 9 software-defined networking feature for building routed underlay fabrics (OpenFabric, OSPF) between nodes to carry VXLAN/EVPN overlays"?
A.SDN Fabrics — A Proxmox VE 9 software-defined networking feature for building routed underlay fabrics (OpenFabric, OSPF) between nodes to carry VXLAN/EVPN overlays
B.SDN Fabrics — ZFS-based async replication of VM disks to another node on a schedule for fast failover.
C.SDN Fabrics — An external corosync vote provider (often a Raspberry Pi or small VM) that supplies a tie-breaking vote for two-node Proxmox clusters
D.SDN Fabrics — Reclaims unused guest RAM dynamically when the minimum memory is set below the assigned amount.
26. Which term means: "A Proxmox VE 9 capability providing snapshots as volume chains on thick LVM over iSCSI/Fibre Channel SANs, removing a long-standing limitation"?
A.LVM shared-storage snapshots — A Proxmox VE 9 capability providing snapshots as volume chains on thick LVM over iSCSI/Fibre Channel SANs, removing a long-standing limitation
B.LVM shared-storage snapshots — The cluster communication layer in Proxmox that keeps configuration in sync and maintains quorum across nodes via redundant rings
C.LVM shared-storage snapshots — Injects hostname, SSH keys, users, and network config into a cloned VM at first boot.
D.LVM shared-storage snapshots — vzdump modes: snapshot is live with minimal pause, suspend freezes briefly, stop guarantees consistency by powering off.
29. Which term means: "Proxmox VE 9 node and resource affinity rules that pin or co-locate/separate VMs and containers, replacing the older HA Groups"?
A.HA affinity rules — Proxmox VE 9 node and resource affinity rules that pin or co-locate/separate VMs and containers, replacing the older HA Groups
B.HA affinity rules — Proxmox VE 9 ships on Debian 13 'Trixie' with kernel 6.14, QEMU 10, and ZFS 2.3.
C.HA affinity rules — Injects hostname, SSH keys, users, and network config into a cloned VM at first boot.
D.HA affinity rules — A Proxmox VE 9 capability providing snapshots as volume chains on thick LVM over iSCSI/Fibre Channel SANs, removing a long-standing limitation
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