AZ-700 · Question #230
You plan to implement an Azure virtual network that will contain 10 virtual subnets. The subnets will use IPv6 addresses. Each subnet will host up to 200 load-balanced virtual machines. You need to…
The correct answer is C. Azure Standard Load Balancer. The Azure Standard Load Balancer is the recommended solution because it supports IPv6, offers high scalability, and can be configured as an internal load balancer to restrict access to the virtual network, meeting cost-minimization goals for Layer 4 load balancing.
Question
You plan to implement an Azure virtual network that will contain 10 virtual subnets. The subnets will use IPv6 addresses. Each subnet will host up to 200 load-balanced virtual machines. You need to recommend a load balancing solution for the virtual network. The solution must meet the following requirements:
- The virtual machines and the load balancer must be accessible only from the virtual network.
- Costs must be minimized.
What should you include in the recommendation?
Options
- ABasic Azure Load Balancer
- BAzure Application Gateway v1
- CAzure Standard Load Balancer
- DAzure Application Gateway v2
How the community answered
(28 responses)- A7% (2)
- B7% (2)
- C82% (23)
- D4% (1)
Why each option
The Azure Standard Load Balancer is the recommended solution because it supports IPv6, offers high scalability, and can be configured as an internal load balancer to restrict access to the virtual network, meeting cost-minimization goals for Layer 4 load balancing.
Basic Azure Load Balancer does not support IPv6, which is a key requirement, and has significant limitations in scale and features compared to the Standard SKU.
Azure Application Gateway v1 does not support IPv6 and is a Layer 7 load balancer, which is generally more expensive and feature-rich than needed for basic Layer 4 load balancing requirements.
Azure Standard Load Balancer supports IPv6, a critical requirement for the virtual subnets, and can be deployed as an internal load balancer, restricting accessibility only from within the virtual network. It also supports up to 1000 backend pool instances, easily accommodating 200 VMs per subnet, and provides a cost-effective Layer 4 solution compared to Application Gateway.
Azure Application Gateway v2 is a Layer 7 load balancer, offering advanced features like WAF which are not specified as requirements, making it a more expensive solution than a Layer 4 load balancer for this scenario.
Concept tested: Azure Load Balancer tiers, features (IPv6, Internal, Scale)
Source: https://learn.microsoft.com/en-us/azure/load-balancer/load-balancer-overview#sku-comparison
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