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AZ-104 Internal Load balancer question phrasing
updated 1 week, 2 days ago
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I’ve recently encountered a question that seems flawed in terms of the correct answers suggested by the platform.
Considering the question in the screenshot, you can load balance TD1 and TD2 with the internal load balancer regardless of the subnet where the Internal LB (standard SKU) is located. As long as the LB is in the same VNet with the VMs, you can select any of the VMs that are present in the Vnet as Backend Pool members.
I have tested this through Azure Portal and Azure CLI and at no point you are limited to choosing only the VMs in the subnet where you have the LB. You cannot select the Subnet of the LB as Backend Pool with Auto Population option (LLMs tend to think that initially, but when going through the actual AZ Portal and AZ CLI LB creation process, “they” realize that the supposed scoping of the LB Backend pool at subnet level is not possible).
As a conclusion, even the phrasing clearly states “traffic between TD1 and TD2 <u style=””>can be load balanced…” and indeed, the traffic can really be loadbalanced using a Standard SKU LB (you can literally pick any VM in the Vnet when creating the backend pool), as long as the VMs are in the same Vnet, not necessarily in the same subnet. If we were talking about a Basic SKU LB which only supports VMs in a single Availability or Scale Set, then the correct answer would be different ofc.
Looking forward to your input whether the suggested answer is indeed wrong of if I am missing something.
Cheers,
Adrian
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I just made a forum post on this question too, before realizing there already was one
In the explanation for the answer, it says something about “other conditions, such as the correct backend pool setup or the inclusion of the VMs in the backend pool, are not met” even though the question didn’t mention anything regarding the backend pool configuration.
So I would also be very interested in getting TD’s feedback on this because if this isn’t an error in their mock exam then I really don’t understand why TD1 and TD2 can’t be load balanced here.
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I’ve passed the exam in the meantime. But would still be curious to have an input on this topic 🙂
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Congrats!
If you don’t mind me asking, did you find the TD mock exams useful for your preparation? Would you say they are close to the real exam?
Cheers
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Hello AdrianP,
Thank you for reaching out to us and bringing this to our attention.
We apologize for any confusion this may have caused. Upon reviewing, we can confirm that TD1 and TD2 are indeed in the same virtual network (TDVnet1), which means TDB1 can load balance traffic between them, even though they are in different subnets.
https://learn.microsoft.com/en-us/azure/load-balancer/skus
We will make the necessary updates, which should be reflected on the portal soon.
If you have any further questions or need additional assistance, please don’t hesitate to reach out.
Regards,
JR @ Tutorials Dojo
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