See solution below.
Explanation:
You can usea system-assigned managed identity for a Windows virtual machine (VM) to access Azure Key Vault.
Sign in to Azure portal
Locate virtual machine VM1.
Select Identity
Enable the system-assigned identity for VM1 by setting the Status to On.

Note:Enabling a system-assigned managed identity is a one-click experience. You can either enable it during the creation of a VM or in the properties of an existing VM.
Reference:
https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/tutorial-windows- vm-access-nonaad

Explanation:

Box 1: Basic
Assign Basic to users with a TFS CAL, with a Visual Studio Professional subscription, and to users for whom you are paying for Azure Boards & Repos in an organization.
Box 2: Stakeholder
AssignStakeholders to users with no license or subscriptions who need access to a limited set of features.
Note:
You assign users or groups of users to one of the following access levels:
Basic: provides access to most features
VS Enterprise: provides access to premium features
Stakeholders: provides partial access, can be assigned to unlimited users for free References:https://docs.microsoft.com/en-us/azure/devops/organizations/security/access-levels?view=vsts

Explanation:

Setting 1: Threshold value
Set to 80 %
Scenario: An Azure Monitor alert for VM1 must be configured to meet the following requirements:
Be triggered whenaverage CPU usage exceeds 80 percent for 15 minutes.
Calculate CPU usage averages once every minute.
Setting 2: Aggregation granularity
Set to 15 minutes.

See solution below.
Explanation:
Step 1: To create a general-purpose v2 storage account in the Azure portal, follow these steps:
On the Azure portal menu, select All services. In the list of resources,type Storage Accounts. As you begin typing, the list filters based on your input. Select Storage Accounts.
On the Storage Accounts window that appears, choose Add.
Select the subscription in which to create the storage account.
Under the Resource group field, select RG1lod11566895
Next, enter a name for your storage account named: az400lod11566895stor Select Create.
Step 2: Enable boot diagnostics on existing virtual machine
To enable Boot diagnostics on an existing virtual machine, follow these steps:
1.Sign in to the Azure portal, and then select the virtual machine VM1.
2. In the Support + troubleshooting section, select Boot diagnostics, then select the Settings tab.
3. In Boot diagnostics settings, change the status to On, and from the Storage account drop-down list, select the storage account az400lod11566895stor.
4. Save the change.

You must restart the virtual machine for the change to take effect.
Reference:
https://docs.microsoft.com/en-us/azure/storage/common/storage-account-create
https://docs.microsoft.com/en-us/azure/virtual-machines/troubleshooting/boot-diagnostics