AZ-104 Deploy and Manage Azure Compute Practice Test 4 — 15 Questions

Question 1

Two app VMs must stay available during planned host maintenance in the same region. Datacenter-level redundancy is not required, but the VMs should be spread across update domains. What should you configure?

Accepted Answer

Availability set. An availability set logically groups VMs to protect against planned maintenance events by distributing them across up to 3 fault domains and 20 update domains. This ensures that during host maintenance, only one update domain is taken offline at a time, keeping the other VMs available. Since datacenter-level redundancy is not required, an availability set is the correct choice.

Answer

Availability zone

Answer

Azure Backup

Answer

Managed disk

Question 2

A customer runs two Windows VMs in a region that does not support availability zones. The app can lose one VM but must keep running through planned maintenance and a single host failure. Which deployment pattern should you use?

Accepted Answer

Place both VMs in an availability set.. An availability set ensures that VMs are placed on different fault domains (separate physical hardware) and update domains (separate maintenance batches). This protects against both a single host failure and planned Azure maintenance, meeting the requirement that the app can lose one VM but keep running.

Answer

Use a single-instance deployment and add more backup jobs.

Answer

Use availability zones because they always exist in every region.

Answer

Put both VMs on the same dedicated host to avoid migration during maintenance.

Question 3

You need to resize a production VM from Standard_D2s_v5 to Standard_D4s_v5 by using Azure CLI. `az vm list-vm-resize-options` shows the target size, but `az vm resize` fails while the VM is running. Which action should you take first?

Accepted Answer

Run `az vm deallocate`, then resize the VM, then start it again.. Option B is correct because resizing a VM to a different size often requires the VM to be in a deallocated state, especially when the new size is in a different hardware cluster or when the VM is currently running and the resize operation fails. The `az vm deallocate` command releases the underlying hardware resources, allowing the VM to be resized to any available size, including Standard_D4s_v5, and then you can start it again. This is a common requirement for production VMs when live resizing is not supported or fails.

Answer

Run `az vm stop`, then resize the VM.

Answer

Run `az vm restart`, then resize the VM.

Answer

Run `az vm generalize`, then recreate the VM from the image.

Question 4

Based on the exhibit, the company will deploy two identical web server VMs in East US 2 behind a load balancer. The service must keep running if one datacenter in the region becomes unavailable. Which deployment choice best meets the requirement?

Accepted Answer

Place one VM in each of two availability zones and front them with the load balancer.. Option B is correct because deploying one VM in each of two availability zones within East US 2 ensures that the VMs are physically separated across distinct datacenters, each with independent power, cooling, and networking. If one datacenter (zone) fails, the other zone remains operational, and the load balancer automatically directs traffic to the healthy VM. This meets the requirement of keeping the service running if one datacenter in the region becomes unavailable.

Answer

Place both VMs in an availability set so Azure can spread them across fault domains.

Answer

Place both VMs in one availability zone because all zones in a region share failure domains.

Answer

Deploy a single VM because Azure automatically replicates it across the region.

Question 5

A stateless web app runs on two Ubuntu VMs behind an Azure Load Balancer. The region supports availability zones. The business wants the app to survive a full datacenter outage and also avoid having both VMs on the same maintenance boundary. Which deployment should you choose?

Accepted Answer

Place the VMs in separate availability zones in the same region.. Option C is correct because deploying the VMs in separate availability zones ensures they are placed in physically distinct datacenters within the same region, protecting against a full datacenter outage. Additionally, each availability zone has its own fault and update domains, so the VMs will never share the same maintenance boundary, meeting both business requirements.

Answer

Place both VMs in a single availability set.

Answer

Deploy one VM and rely on Azure Backup for recovery.

Answer

Deploy both VMs without any fault-domain configuration.

Question 6

Match each Azure CLI command to the action it performs for a virtual machine.

Question 7

You are deploying a Windows Server VM for an internal app. The VM must support Secure Boot and vTPM later, its OS disk must survive host moves, and the team wants the lowest-cost managed disk tier that still behaves like a normal writable OS disk. Which two choices should you make? Select two.

Accepted Answer

Use a Generation 2 Windows Server Marketplace image.. Option A is correct because Secure Boot and vTPM are only supported on Generation 2 VMs in Azure. Generation 2 VMs use a UEFI-based boot architecture, which is required for these security features. A Generation 2 Windows Server Marketplace image provides the necessary UEFI firmware and GPT-partitioned OS disk to enable Secure Boot and vTPM.

Answer

Use an ephemeral OS disk to reduce storage cost.

Answer

Use an unmanaged VHD stored in a storage account.

Answer

Use a Generation 1 image and enable Secure Boot after deployment.

Question 8

Match each Azure VM administration requirement on the left with the most appropriate Azure CLI command on the right. Use each answer once.

Question 9

VM-App01 is responding slowly and appears to be on a degraded Azure host. You must keep the VM resource, keep its disks and NIC, and move it to fresh infrastructure before further troubleshooting. Which two actions can achieve that goal? Select two.

Accepted Answer

Redeploy the VM.. Redeploying the VM (Option A) moves the VM to a new Azure host node while preserving the VM resource, its disks, and NIC. This is the correct action because it resolves host-level degradation without deleting or recreating the VM. Stopping/deallocating the VM (Option D) releases the underlying hardware lease, which forces the VM to be placed on a new host when started again, also preserving the VM resource, disks, and NIC.

Answer

Delete the VM and recreate it from the OS disk.

Answer

Capture the VM into a generalized image.

Answer

Convert the VM to an availability set.

Question 10

A customer-facing service needs to survive a single datacenter outage in a zone-supported region. You do not need cross-region failover, but you do need Azure to spread instances without manual placement errors. Which two deployment choices satisfy that goal? Select two.

Accepted Answer

Place the VMs in different availability zones within the same region.. Option A is correct because availability zones are physically separate datacenters within a region, each with independent power, cooling, and networking. Placing VMs in different zones ensures that a single datacenter outage does not affect all instances, meeting the survivability requirement without manual placement errors. Azure automatically distributes VMs across selected zones, eliminating human error in instance placement.

Answer

Use an availability set and expect it to cover a zone outage.

Answer

Keep all instances in one zone and rely on the load balancer.

Answer

Use a paired region for automatic in-region zone balancing.

Question 11

A build agent VM is recreated from image every night. The OS can be lost on reimage, but build caches and artifacts must persist across rebuilds. The team also wants the cheapest OS storage option that supports this pattern. Which two choices should you make? Select two.

Accepted Answer

Use an ephemeral OS disk.. Option A is correct because an ephemeral OS disk uses the local VM storage or temp SSD, which is destroyed when the VM is deallocated or reimaged. This matches the requirement that the OS can be lost on reimage. Option B is correct because placing build caches and artifacts on a separate managed data disk ensures they persist independently of the OS disk lifecycle; data disks are not affected by OS reimaging and can be reattached to the new VM instance.

Answer

Use a Premium SSD OS disk so the reimage is preserved.

Answer

Store the caches only on the temporary resource disk.

Answer

Use an availability set to make the OS disk persistent.

Question 12

An application runs on two identical VMs in a region that does not support availability zones. The app must keep running through planned maintenance and a single hardware fault, and the team does not want to add a second region. Which two deployment choices are appropriate? Select two.

Accepted Answer

Place the VMs in an availability set.. A is correct because an availability set distributes VMs across multiple fault domains (up to 3) and update domains (up to 20) within the same datacenter. This ensures that during planned maintenance (update domain isolation) or a hardware fault (fault domain isolation), at least one VM remains available, meeting the requirement without needing availability zones or a second region.

Answer

Put both VMs in the same fault domain to simplify patching.

Answer

Deploy the workload in availability zones anyway.

Answer

Use a second Azure region for the primary failover design.

Question 13

A reporting server must be resized from 4 vCPU to 8 vCPU for a four-hour batch window. The VM name, NIC, private IP, and attached managed disks must stay the same, and the team accepts a brief outage during the change. Which two actions should you choose? Select two.

Accepted Answer

Deallocate the VM before changing its size.. Option A is correct because deallocating the VM (stopping it in the Azure portal) releases the underlying hardware reservation, which is required before changing the VM size to a different SKU. This ensures the VM can be resized to a supported size without conflicts, and the brief outage is acceptable as stated in the scenario.

Answer

Delete the VM and recreate it with a new size.

Answer

Generalize the VM first to preserve the existing configuration.

Answer

Take a snapshot of the OS disk instead of resizing.

Question 14

A data disk on VM-Data01 was corrupted after a bad patch, and you already have a snapshot taken last night. The OS disk should remain unchanged. Which two actions should you take to restore only the data disk? Select two.

Accepted Answer

Create a managed disk from the snapshot.. Option A is correct because a snapshot is a point-in-time copy of a disk that can be used to create a new managed disk. Since you have a snapshot of the corrupted data disk from last night, creating a managed disk from that snapshot restores the data to its state at the time of the snapshot, leaving the OS disk untouched.

Answer

Redeploy the VM and expect the data disk to revert automatically.

Answer

Generalize the VM and redeploy it from the snapshot.

Answer

Replace the snapshot with the current data disk to roll back the VM.

Question 15

A platform team has a generalized VM image that must be published to East US and West Europe today and patched later without overwriting the original build. They want Azure to keep version history and replicate the image to both regions. Which two actions or resources should they use? Select two.

Accepted Answer

Create an Azure Compute Gallery. Azure Compute Gallery (formerly Shared Image Gallery) allows you to store and manage VM image versions, including version history, and replicate them across multiple Azure regions. By creating an image definition and image version within the gallery, you can publish the generalized VM image to East US and West Europe today, and later create a new image version for patching without overwriting the original build, preserving the version history.

Answer

Capture the VM as a single managed image and copy it manually to each region

Answer

Use an availability set to preserve the image

Answer

Take a snapshot of the OS disk and deploy VMs directly from the snapshot