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.

• ✓

  az deployment group what-if

  Why this is correct

  az deployment group what-if invokes Azure Resource Manager's what-if operation at a resource group or subscription scope. It takes a Bicep file or ARM template and compares the current deployed state against the desired state, then prints a table of predicted operations: Create, Modify, Delete, NoChange, and sometimes Ignore. It does not actually execute any deployment, so it is completely safe for previewing the impact of a Bicep deployment before applying it. You can further refine it with --exclude-change-types or --result-format to focus on specific changes.

• ✗

  az vm create

  Why it's wrong here

  az vm create is a high-level command that directly provisions a single virtual machine and its implicitly created resources (like NIC, public IP, VNet, or storage) based on the specified parameters. It does not accept an entire template or simulate the broader set of changes that a Bicep deployment might include, and it lacks a built-in what-if mode. Even if you are only interested in a single VM, az deployment group what-if with a Bicep file would be the correct way to see the planned resource graph before any actual creation occurs.

  When this WOULD be correct

  This option would be correct in a scenario where the question asks: 'You need to deploy a new Linux virtual machine in Azure using the CLI. Which command should you use?'

• ✗

  az monitor metrics list

  Why it's wrong here

  az monitor metrics list is a monitoring command that retrieves metric time-series data, such as CPU percentage or disk I/O, from Azure Monitor for a specific resource. It queries the resource's telemetry history rather than the resource manager's deployment engine, so it cannot anticipate changes that a Bicep template would make. While metrics can be used to detect drift or performance after a deployment, they have no role in previewing infrastructure modifications before a deployment.

  When this WOULD be correct

  This command would be correct in a scenario where you need to list metric values for a specified Azure resource, such as checking CPU usage of a VM over a time range.

• ✗

  az deployment group create --mode Complete

  Why it's wrong here

  az deployment group create --mode Complete actually runs a deployment against a resource group, and Complete mode ensures resources in the group that are not defined in the template are deleted. This is an imperative action, not a preview; it will immediately provision, update, and potentially destroy resources as it executes. To get a preview with similar parameters, you would need to add the --what-if flag (or use az deployment group what-if as a standalone command), but the create command alone cannot show changes without applying them.

  When this WOULD be correct

  This command is correct when the question asks to deploy a Bicep file to a resource group using Complete mode, which removes existing resources not defined in the template, ensuring the resource group matches the template exactly.

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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