Exam AZ-104 topic 14 question 1 discussion

As per requirements: - You have a public-facing application named App1. App1 is comprised of the following three tiers: A SQL database, A web front end and A processing middle tier. Each tier is comprised of five virtual machines. Users access the web front end by using HTTPS only. - Move all the virtual machines for App1 to Azure. - Minimize the number of open ports between the App1 tiers. Box 1: 1 1 VNET and then follow the N-tier application architecture. Box 2: 3 3 Subnets (1 Subnet for each tier of the App1). The tiers can communicate each other, because they are inside the same VNET. Of course you would need additional NSGs to restrict traffic. Reference: https://docs.microsoft.com/en-us/azure/architecture/reference-architectures/n-tier/n-tier-sql-server

Answer is correct. 1 VNET 3 subnets

Today, I passed the exam with a score of 854 points, along with my colleague who scored 774 points. This was our second attempt, as we previously failed with scores of 660 and 673 points respectively, having only used Savils learning materials (missing the last 2 modules). We primarily studied the basics from Saviltech on YouTube, which I strongly recommend for newcomers to cloud. For our second attempt, we focused on dump questions, and I can confirm that over 90% of the questions remained the same. However, ba aware that as of March 9th, there has been a change in the UI, making it more "user-friendly". Unfortunately, my colleague encountered case studies at the end, which s*cks.. Also, they changed order of questions for case studies. A big thanks to the one and only mlantonis, the legend, who brought light into darkness on several occasions. It took us around one month of intensive studying as novices. Good luck to everyone!

Given answer is right

This was in Exam 23-08-23

On Exam 30/03/2023

As per requirements: - You have a public-facing application named App1. App1 is comprised of the following three tiers: A SQL database, A web front end and A processing middle tier. Each tier is comprised of five virtual machines. Users access the web front end by using HTTPS only. - Move all the virtual machines for App1 to Azure. - Minimize the number of open ports between the App1 tiers. Box 1: 1 1 VNET and then follow the N-tier application architecture. Box 2: 3 3 Subnets (1 Subnet for each tier of the App1). The tiers can communicate each other, because they are inside the same VNET. Of course you would need additional NSGs to restrict traffic.

Given answer is correct and comments as per mlantonis

this case study was there on 16/03/2022 but with different quesionaire

These case studies are huge, and yet you could just skip to the end, read the question, and very quickly ascertain the correct answer by going back and skim reading the requirement.

"Minimize the number of open ports between the App1 tiers.", With 1 VNET, we have all ports open between the App1 tiers. With 3 VNETs and 1 Subnet for each VNET, it can be solved.

You want the 3 subnets so that the tiers can communicate freely with each other. If you and 1 VNet and 1 Subnet you would need to create a bunch of NSGs. That would create more administrative effort.

1 VNET and 3 Subnets. 1 Subnet for each Tier of the App1

Given Answer is correct 1 Vnet 3 Subnet for 3 Tiers

Key here is: Minimize administrative effort whenever possible. So One Vnet, three Subnets to separate the 3 tiers.

1 VNET - 3 subnets

Although you could place all VMs in a single subnet, that does not seem to be a recommended configuration.