Your company has an on-premises network and three Azure subscriptions named Subscription1, Subscription2, and Subscription3.
The departments at the company use the Azure subscriptions as shown in the following table.
All the resources in the subscriptions are in either the West US Azure region or the West US 2 Azure region.
You plan to connect all the subscriptions to the on-premises network by using ExpressRoute.
What is the minimum number of ExpressRoute circuits required?
To connect multiple Azure subscriptions to an on-premises network using ExpressRoute, a single ExpressRoute circuit can be shared across multiple subscriptions as long as they are within the same geopolitical region. The West US and West US 2 Azure regions fall within the same geopolitical region. Therefore, one ExpressRoute circuit is sufficient to connect all three Azure subscriptions: Subscription1, Subscription2, and Subscription3, across the IT, Research, Development, Testing, and Distribution departments.
Answer: A - 1 Managing Authorization The circuit owner can share a circuit with up to 10 Azure subscriptions. The circuit owner can view who has been authorized to the circuit. The owner can revoke the authorization at any time. https://azure.microsoft.com/en-us/blog/enable-multiple-subscription-expressroute/#:~:text=The%20circuit%20owner%20can%20share,the%20authorization%20at%20any%20time.
You are correct, though network topology can negate the ExpressRoute subscription limit anyway. For example, connect the ExpressRoute to a hub vmet and peer the subscription vnets to it.
1 Express Route Circuit standard sku would be good enough. With 1 er circuit you can connect upto 10 vnets and standard sku allows you to connect within same geopolitical region without additional cost.
it's in the same metro, so local is fine
ExpressRoute circuits can be shared between subscriptions. Correct answer is A
appears on exam, 19 Sept 2023
You can link up to 10 virtual networks to a standard ExpressRoute circuit. All virtual networks must be in the same geopolitical region when using a standard ExpressRoute circuit. West US and West US 2 are in the same Azure geopolitical region, so you would need only one ER circuits. https://learn.microsoft.com/en-us/azure/expressroute/expressroute-howto-linkvnet-portal-resource-manager#connect-a-vnet-to-a-circuit---different-subscription https://learn.microsoft.com/en-us/azure/expressroute/expressroute-locations-providers
B. 2 You need at least two ExpressRoute circuits to connect all three Azure subscriptions to the on-premises network. One circuit connects the West US Azure region and another circuit connects the West US 2 Azure region. All the resources in the subscriptions are in either the West US Azure region or the West US 2 Azure region, so you need to connect both regions.
https://learn.microsoft.com/en-us/azure/expressroute/expressroute-faqs Yes. You can link up to 10 virtual networks in the same subscription as the circuit or different subscriptions using a single ExpressRoute circuit. This limit can be increased by enabling the ExpressRoute premium feature. Connectivity and bandwidth charges for the dedicated circuit gets applied to the ExpressRoute circuit owner and all virtual networks share the same bandwidth.
Appeared on Exam 26 Aug 2023
Looks like the correct answer is A You can have an ExpressRoute Circuit going into one region and gain access to other regions from there... Connectivity to all regions within a geopolitical region You can connect to Microsoft in one of our peering locations and access regions within the geopolitical region. For example, if you connect to Microsoft in Amsterdam through ExpressRoute. You'll have access to all Microsoft cloud services hosted in Northern and Western Europe. For an overview of the geopolitical regions, the associated Microsoft cloud regions, and corresponding ExpressRoute peering locations, see the ExpressRoute partners and peering locations article. https://docs.microsoft.com/en-us/azure/expressroute/expressroute-introduction#connectivity-to-all-regions-within-a-geopolitical-region
https://docs.microsoft.com/en-us/azure/expressroute/expressroute-locations#locations See North America geopolitical region
Answer A is correct. As already mentioned by others you can connect 10 Virtual Networks to a single ExpressRoute Circuit (Standard SKU or higher required). What is important to understand is that those Virtual Networks (e.g., Virtual Network Gateways) must be in the same geographical region. Well, 'West US' and 'West US 2' are in the same geographical region.
Appeared on Exam 05 Sep 2023
1 Express Route Circuit standard sku would be good enough. With 1 er circuit you can connect upto 10 vnets and standard sku allows you to connect within same geopolitical region without additional cost.
Answer: A - 1
if the express route would be with a standard SKU, then yes, I think A - 1 express route would be enough
Not true for Local SKU though. . With a Local SKU ExpressRoute circuit you can connect to resources in Azure regions in the same metro as the peering site. In this case, your on-premises network can access UK South Azure resources over ExpressRoute. For more information, see What is ExpressRoute Local?. When you configure a Standard SKU ExpressRoute circuit, connectivity to Azure resources will expand to all Azure regions in a geopolitical area. https://learn.microsoft.com/en-us/azure/expressroute/expressroute-faqs
same metro, so local is fine
1 Express Route Circuit standard sku would be good enough. With 1 er circuit you can connect upto 10 vnets and standard sku allows you to connect within same geopolitical region without additional cost.
Answer: A - 1