Exam AZ-104 topic 5 question 4 discussion

You aren't load balancing 3389. If you create a load balancing rule for 3389 you'd end up with RDP connections alternating between the two. The question is specifically asking about NAT rules, you need two here: one per VM on different ports. Read: https://docs.microsoft.com/en-us/azure/load-balancer/tutorial-load-balancer-port-forwarding-portal I labbed this. Load balancer requires a public IP to be assigned with deployment. NAT rules only require a backend pool (you map them to a specific NIC on a specific VM in the pool). The question already has everything required to create one, so either Microsoft has a provably wrong question or this was garbled in translation. Please lab things like this, azure pass only requires an email and gives you 30 days and 100 bucks of credit, you can lab stuff left and right and not use 10% of it.

you are right, and rule we need is NAT rule: https://docs.microsoft.com/en-us/powershell/module/az.network/add-azloadbalancerinboundnatruleconfig?view=azps-6.2.0

I recall this update. I go with the front end IP address as all other requirements given in this link. LB rule is already in place as given in the article. May be MS is referring the public IP address SKU from basic to standard. I go with the frontend IP address.