See the solution of this Task below
Explanation:
TASK 3
Objective:
Create a user named Admin1 in contoso.com.
Admin1 must be able to back up and restore files on SRV1.
Follow the principle of least privilege.
Step-by-Step Guide
✅ Step 1: Create the User Account
Log in to a Domain Controller (e.g., DC1) with appropriate admin rights.
Open Active Directory Users and Computers (dsa.msc).
In the contoso.com domain:
Right-click the Users container or another OU where you want to create the account.
Select New > User.
Enter the following:
First name: Admin1
User logon name: Admin1
Click Next and set a password (ensure it meets the domain's password policy).
Configure password options (e.g., User must change password at next logon, if required).
Click Finish.
✅ Step 2: Grant Backup and Restore Rights on SRV1
By default, Backup Operators have the ability to back up and restore files (without giving full admin rights).
Log in to SRV1 (the target server).
Open Computer Management (compmgmt.msc).
In the left pane, expand:
System Tools > Local Users and Groups > Groups.
Find and double-click the Backup Operators group.
Click Add.
In the Select Users, Computers, Service Accounts, or Groups window:
Type Admin1.
Click Check Names to resolve the user.
Click OK to add Admin1 to the group.
Click OK again to close the Backup Operators group properties.
✅ Step 3: Verify Access
Log in as Admin1 on SRV1 and test performing backup and restore operations using tools like Windows Server Backup.
Since Backup Operators can back up and restore data but do not have full administrative privileges, this follows the least privilege principle.
✅ Additional Notes
If you prefer using PowerShell, you can add the user to the group like this on SRV1:
Add-LocalGroupMember -Group "Backup Operators" -Member "contoso\Admin1"

Reference:
https://docs.microsoft.com/en-us/azure/storage/file-sync/file-sync-introduction