AZ-104 Deploy and Manage Azure Compute Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Azure Backup with a Recovery Services vault.

  Why this is correct

  Azure Backup with a Recovery Services vault is the correct solution because it provides a centralized, policy-driven backup service designed specifically for VM protection. It installs the VM extension to take application-consistent snapshots, transfers them to the vault, and applies configurable retention rules for daily/weekly/monthly/yearly points. This enables granular restores (files, disks, or entire VM) with integration into Azure Monitor and RBAC, giving you a reliable, auditable backup system for disaster recovery and operational recovery.

• ✗

  Managed disk snapshots only.

  Why it's wrong here

  Managed disk snapshots provide point-in-time copies of a disk, but they are not a managed backup solution. Snapshots must be scheduled and deleted manually (or via scripts), they offer no centralized retention policy, and they are crash-consistent by default, meaning they do not guarantee file-system or application consistency for applications running inside the VM. Additionally, restore from a snapshot requires manually creating a disk and attaching it to a VM, whereas Azure Backup integrates with Recovery Services vault for a single-click restore with defined retention.

  When this WOULD be correct

  You need to create a point-in-time backup of a single managed disk (e.g., data disk) for quick restoration or to create a new VM from the snapshot, and centralized backup management or retention policies are not required.

• ✗

  Azure Site Recovery only.

  Why it's wrong here

  Azure Site Recovery is intended for disaster recovery, not routine backup. It continuously replicates the VM to a secondary Azure region to meet strict RTO/RPO targets, but it does not create point-in-time backup copies or allow configurable retention periods like a vault does. Replicated data is a live, rolling copy tied to the recovery point objective, so it cannot be used to restore a VM from months ago or recover from accidental deletion—a backup service like Azure Backup is required for that.

  When this WOULD be correct

  If the question asked for a solution to replicate VMs to another Azure region for failover during a regional outage, ensuring business continuity with minimal downtime, Azure Site Recovery would be the correct answer.

• ✗

  Boot diagnostics.

  Why it's wrong here

  Boot diagnostics is a troubleshooting feature that captures serial console output and screenshots of the VM during boot. It helps diagnose startup issues such as kernel panics or OS boot failures, but it does not capture any user data, application data, or even a full OS disk image. Since it only stores transient logs and screenshots, it cannot be used to restore the VM or its data; it is not a backup or disaster-recovery mechanism.

  When this WOULD be correct

  When the question asks for a method to troubleshoot a VM that fails to boot or to capture boot logs for diagnostic purposes, and the solution does not need to restore the VM from backup.

Option-by-option analysis

Why each answer is right or wrong

Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.

Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”

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