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Difficulty: MediumConfigure Azure Load Balancer

You are configuring a public Azure Load Balancer to distribute traffic to two virtual machines, VM-App1 and VM-App2. The virtual machines are deployed in different Availability Zones (Zone 1 and Zone 2) within the same Azure region. You need to ensure the load balancer can route traffic to both virtual machines. Which two configurations must you select to support this architecture?

  1. Deploy the load balancer using the Standard SKU.Answer
  2. Configure the frontend IP address using a Standard SKU public IP.Answer
  3. C
    Deploy the load balancer using the Basic SKU.
  4. D
    Configure the frontend IP address using a Basic SKU public IP.

Answer

Deploy the load balancer using the Standard SKU and configure the frontend IP address using a Standard SKU public IP.
To distribute traffic to virtual machines located in different Availability Zones, a Standard SKU load balancer must be deployed because the Basic SKU load balancer does not support zonal or zone-redundant backend pools. Additionally, the public IP address associated with the frontend of a Standard SKU load balancer must also be of the Standard SKU, as SKU alignment between the load balancer and the frontend public IP is not permitted.

Step-by-Step Solution

1
Analyze the virtual machine layout and zone configuration.
The target virtual machines VM-App1 and VM-App2 are deployed in different Availability Zones (Zone 1 and Zone 2).
Azure Load Balancers have different capability boundaries depending on the SKU selected.
2
Determine the required Load Balancer SKU.
A Standard SKU load balancer is required.
Basic SKU load balancers do not support backend pool members spanning multiple Availability Zones. Only the Standard SKU load balancer supports zonal and zone-redundant backend pool configurations.
3
Determine the required Public IP SKU.
A Standard SKU public IP address is required.
The SKU of the public IP address must match the SKU of the load balancer. Since a Standard SKU load balancer is required, the frontend public IP configuration must use a Standard SKU public IP.

Key Concept

Azure Load Balancer SKU features and IP compatibility
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Topics

Configure Azure Load Balancer

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