
* LB1 will be connected to a subnet named LB1 in VNET1. Yes, this is correct. The template specifies that the load balancer resource named LB1 has a property called frontendIPConfigurations, which defines the subnet where the load balancer is located. The value of this property is a reference to the resource ID of the subnet named LB1 in VNET1. You can see this reference in line 38 of the template1.
* LB1 can be deployed only to the resource group that contains VNET1. No, this is not correct. The template does not specify a resource group for the load balancer resource, which means it can be deployed to any resource group in the same subscription as VNET1. However, if you want to deploy the load balancer to a specific resource group, you can add a property called resourceGroup to the reference of the subnet in line 382.
* The value of the sku variable can be provided as a parameter when the template is deployed. No, this is not correct. The template defines the sku variable as a constant value of "Standard" in line 9. This means that the value cannot be changed or overridden by a parameter when the template is deployed. If you want to make the sku value configurable, you need to change the variable definition to a parameter definition, and use the parameter reference instead of the variable reference in line 363.