Rob is working on provisioning Azure AD applications and Service principal to direct access data in ADLS gen2 account to process data in Databricks Spark jobs. Which of the following four tasks he’s required to perform in sequence? Here is the task list: 
1) Assign roles to the application to provide the service principal with the required permissions to access the ADLS Gen2 account. 
2) Create an Azure Key Vault-backed secret scope that will store the client secret associated with the Azure AD app. 
3) Create an Azure AD app that will create an associate service principal required to access the storage account. 
4) Save the client secret associated with the Azure AD app in the Azure Key Vault. 
5) Authenticate and access the ADLS Gen2 through a mount point. 
6)Use Databricks CLI to access the ADLS Gen2 storage account. 
Select the correct sequence to accomplish the above-mentioned objective:

Answer options:

A.2 >3 > 1 > 4
B.3 >2 > 1 > 4
C.2 >4 > 3 > 1
D.3 >2 > 4 > 1

Correct Answer: D Option D is correct. The process of creating Azure AD application and Service principal using that service principal to mount or directly access data in an ADLS Gen2 storage account consists of the following consequent steps:
Create an Azure AD app that will create an associate service principal required to access the storage account.
 Create an Azure Key Vault-backed secret scope that will store the client secret associated with the Azure AD app.
Save the client secret associated with the Azure AD app in the Azure Key Vault.
Assign roles to the application to provide the service principal with the required permissions to access the ADLS Gen2 account.
Reference: 

https://docs.microsoft.com/en-us/azure/databricks/data/data-sources/azure/adls-gen2/azure-datalake-gen2-sp-access