AZ-104 Certification Practice Question #236

Question

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You have an Azure subscription that contains the virtual machines shown in the following table.

You deploy a load balancer that has the following configurations:
✑ Name: LB1
✑ Type: Internal
✑ SKU: Standard
✑ Virtual network: VNET1
You need to ensure that you can add VM1 and VM2 to the backend pool of LB1.
Solution: You disassociate the public IP address from the network interface of VM2.
Does this meet the goal?

Accepted Answer

An Azure Standard Load Balancer (LB1) requires that all virtual machines in its backend pool either have no public IP or use a Standard SKU public IP address; mixing Basic SKU public IPs with a Standard SKU Load Balancer is not allowed. Since VM1 has no public IP (Public IP SKU is `None`), it is compatible. VM2 has a Basic SKU public IP, which creates a SKU mismatch. Disassociating the public IP from VM2's network interface removes the mismatch and allows both VM1 and VM2 to be successfully added to the backend pool.

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