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Difficulty: MediumConfigure Public and Private IP Addresses

You are configuring a virtual machine named VM-App1. The virtual machine has a single network interface named nic-app1. The primary IP configuration of nic-app1 is associated with the backend pool of a Standard Load Balancer. You need to configure a secondary IP configuration on nic-app1 that includes a public IP address. Which of the following configurations should you select for the secondary public IP address? Select two.

  1. SKU: StandardAnswer
  2. B
    SKU: Basic
  3. Assignment: StaticAnswer
  4. D
    Assignment: Dynamic

Answer

SKU: Standard and Assignment: Static
The correct configurations are SKU: Standard and Assignment: Static. In Azure, when a virtual machine's network interface is associated with a Standard Load Balancer backend pool, any public IP addresses associated with that network interface must also use the Standard SKU. Standard SKU public IP addresses require static allocation.

Step-by-Step Solution

1
Analyze the load balancer association.
The network interface nic-app1 belongs to the backend pool of a Standard Load Balancer.
This establishes that all resources, including public IP addresses associated with the backend virtual machine's network interface, must use the Standard SKU to avoid SKU mismatch.
2
Determine the required SKU for the secondary public IP address.
The SKU must be Standard.
Basic SKU public IP addresses cannot be mixed with Standard SKU load balancers or associated resources.
3
Determine the allocation method for the selected SKU.
The allocation method must be Static.
Standard SKU public IP addresses support static IP address allocation.

Key Concept

Standard Load Balancer backend pool members must use Standard SKU public IP addresses, which require static allocation.
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Topics

Configure Public and Private IP Addresses

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