You have an Azure subscription that contains the public IP addresses shown in the following table. You plan to deploy a NAT gateway named NAT1. Which public IP addresses can be used as the public IP address for NAT1?
Answer is correct. Per the link, NAT cannot be associated to an IPv6 Public IP address or IPv6 Public IP Prefix. However, it can be associated to a dual stack subnet.
Answer A
as per Microsoft
NAT gateway is compatible with standard SKU public IP addresses or public IP prefix resources or a combination of both.
Basic SKU resources, such as basic load balancer or basic public IPs aren't compatible with NAT gateway. NAT gateway can't be used with subnets where basic SKU resources exist. Basic load balancer and basic public IP can be upgraded to standard to work with a NAT gateway
This page confirms you can use standard SKU only
https://docs.microsoft.com/en-us/azure/virtual-network/nat-gateway/nat-overview#limitations
This page confirms that the address must be static, and that IPv6 is not supported
https://learn.microsoft.com/en-us/azure/virtual-network/ip-services/public-ip-addresses#at-a-glance
IP3 only......as NAT gateway is compatible with Standard SKU for IPv4 only
A NAT gateway can’t be associated to an IPv6 public IP address or IPv6 public IP prefix
In today exam Oct 2nd 2022
NAT gateway is compatible with standard SKU public IP addresses or public IP prefix resources or a combination of both. You can use a public IP prefix directly or distribute the public IP addresses of the prefix across multiple NAT gateway resources. The NAT gateway will groom all traffic to the range of IP addresses of the prefix.
Basic resources, such as basic load balancer or basic public IPs aren't compatible with Virtual Network NAT. Basic resources must be placed on a subnet not associated to a NAT gateway. Basic load balancer and basic public IP can be upgraded to standard to work with a NAT gateway
https://docs.microsoft.com/en-us/azure/virtual-network/nat-gateway/nat-overview#virtual-network-nat-basics
Virtual Network NAT basics
A NAT gateway can’t be associated to an IPv6 public IP address or IPv6 public IP prefix. It can be associated to a dual stack subnet but will only be able to direct outbound traffic with an IPv4 address.
https://docs.microsoft.com/en-us/azure/virtual-network/nat-gateway/nat-overview#virtual-network-nat-basics
Virtual Network NAT basics
Basic resources, such as basic load balancer or basic public IPs aren't compatible with Virtual Network NAT. Basic resources must be placed on a subnet not associated to a NAT gateway. Basic load balancer and basic public IP can be upgraded to standard to work with a NAT gateway
• To upgrade a basic load balancer to standard, see Upgrade a public basic Azure Load Balancer.
• To upgrade a basic public IP to standard, see Upgrade a public IP address.
https://docs.microsoft.com/en-us/azure/virtual-network/nat-gateway/nat-overview#virtual-network-nat-basics
Virtual Network NAT basics
Virtual Network NAT is compatible with standard SKU public IP addresses or public IP prefix resources or a combination of both. You can use a public IP prefix directly or distribute the public IP addresses of the prefix across multiple NAT gateway resources. The NAT gateway will groom all traffic to the range of IP addresses of the prefix.
Is correct:
*Basic resources, such as basic load balancer or basic public IPs aren't compatible with Virtual Network NAT. Basic resources must be placed on a subnet not associated to a NAT gateway. Basic load balancer and basic public IP can be upgraded to standard to work with a NAT gateway
*A NAT gateway can’t be associated to an IPv6 public IP address or IPv6 public IP prefix. It can be associated to a dual stack subnet
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