Exam AZ-700 topic 3 question 36 discussion

3 Backend Pools | 3 Rules I believe this is a Classic Front Door question. The first reference link provides an overview of classic routing. The questions shows we have a single frontend (contoso.azurefd.net) and there are three paths - /uk, /us, and /images. The second link shows the three paths would each be a separate rule. Regarding the number of backend pools, the question states, "...must be routed to [App1uk or App1us]" for the two App Services. The third link does not indicate there is a way to route traffic to a specific app service based on location. However, if we put each app service in its own backend pool, we can have the path rule route to the correct App Service everytime. The Latency routing logic is fine for storage accounts, but not the App Services based on the question requirements. References https://learn.microsoft.com/en-us/azure/frontdoor/front-door-routing-architecture?pivots=front-door-classic https://learn.microsoft.com/en-us/azure/frontdoor/front-door-route-matching?pivots=front-door-classic#frontend-host-matching https://learn.microsoft.com/en-us/azure/frontdoor/routing-methods

correct answer should be 2 and 2. You have 1 Frontend, which is contoso.com, this is one frontend with a custom domain and not App Service as origin! You then create 2 Backend Pools, (1 for the App Services, one for both Storage Accounts) and 2 routing rules -> 1 routing rule containing both entries for the App Services ( /uk and /us) and 1 for the Storage Accounts (/images). The latter one will be configured to route by latency (default) https://learn.microsoft.com/en-us/azure/frontdoor/create-front-door-portal https://learn.microsoft.com/en-us/azure/frontdoor/front-door-route-matching?pivots=front-door-standard-premium#frontend-host-matching The App Service Routing Rules specifies the precise paths, the Storage Account routing rule

Backend Pools 3 Routing rules 3

Agreed

ChatGPT: To meet the requirements outlined in the scenario, let's analyze the Azure Front Door setup: Requirements: Requests to https://contoso.azurefd.net/uk must be routed to App1uk (UK website). Requests to https://contoso.azurefd.net/us must be routed to App1us (US website). Requests to https://contoso.azurefd.net/images must be routed to the closest storage account (either St1us or St1uk). Explanation: Backend Pools: We need three backend pools: One for App1uk (UK website). One for App1us (US website). One for the storage accounts (St1us and St1uk), which will handle image requests based on the proximity to the user. Routing Rules: We need three routing rules: One rule for /uk to direct requests to the App1uk backend. One rule for /us to direct requests to the App1us backend. One rule for /images to route to the storage account backend, based on proximity (latency-based routing). Final Answer: Backend pools: 3 Routing rules: 3

To meet the requirements mentioned, you would need to create the following backend pools and routing rules: Backend pools: Backend pool for App1uk: This backend pool will include the App1uk Azure App Service. Backend pool for App1us: This backend pool will include the App1us Azure App Service. Backend pool for the storage account closest to the user: This backend pool will include the storage account in the location closest to the user. Routing rules: Routing rule for https://contoso.azurefd.net/uk: This routing rule will route requests to the App1uk backend pool when the URL is https://contoso.azurefd.net/uk. Routing rule for https://contoso.azurefd.net/us: This routing rule will route requests to the App1us backend pool when the URL is https://contoso.azurefd.net/us. Routing rule for https://contoso.azurefd.net/images: This routing rule will route requests to the backend pool for the storage account closest to the user when the URL is https://contoso.azurefd.net/images. Therefore, the minimum number of backend pools to create is 3, and the minimum number of routing rules to create is also 3.

2 and 2, 2 differents websites required each one requires 1 backend pool and 1 rules.

I asked ChatGPT, answer is 3 rules and 4 backend pools and I think that is correct. The backend pools would be: App1uk pool - contains the backend instances for the UK app App1us pool - contains the backend instances for the US app StorageAccountUK pool - contains the backend instance for the storage account storing images for users in the UK StorageAccountUS pool - contains the backend instance for the storage account storing images for users in the US The routing rules would be: Route requests to https://contoso.azurefd.net/uk to the App1uk backend pool. Route requests to https://contoso.azurefd.net/us to the App1us backend pool. Route requests to https://contoso.azurefd.net/images to the appropriate backend pool based on the geographic location of the user. a. If the user is located in the UK, route the request to the StorageAccountUK pool. b. If the user is located in the US, route the request to the StorageAccountUS pool. So, you would need three routing rules and four backend pools to meet the requirements you specified.

Each URL is a separate 'edge front end' on Azure Front Door. with its own Routing Rule and its own backend pool. https://learn.microsoft.com/en-us/azure/frontdoor/quickstart-create-front-door