Last updated on July 12, 2023
Azure ExpressRoute Cheat Sheet
- Enables you to establish a private connection between your on-premises data center or corporate network to your Azure cloud infrastructure.
- More secure, reliable, and faster than conventional VPN connections.
- Supports dynamic routing between your network and Microsoft via Border Gateway Protocol (BGP). The connection is redundant in every peering location for higher reliability.
Features
- ExpressRoute connections enable access to Microsoft Azure services and Microsoft Office 365 services from your on-premises network.
- Provides connectivity to all regions within a geopolitical region.
- To extend connectivity across geopolitical boundaries, you can enable ExpressRoute Premium.
- ExpressRoute Global Reach allows you to exchange data across your on-premises environments by connecting it to your ExpressRoute circuits.
- ExpressRoute Direct provides dual 100Gbps connectivity that supports Active/Active scale connectivity.
- Supported bandwidth options up to 10 Gbps.
- ExpressRoute premium add-on (for ExpressRoute circuit) provides the following capabilities:
- Increased route limits from 4,000 routes to 10,000 routes for Azure public and private peering.
- Global access to services across any other region.
- Increase the number of VNet links (from 10 to a larger limit) on every ExpressRoute circuit.
Use Cases
- Transferring large data sets.
- Developing and using applications that use real-time data feeds.
- Building hybrid environments that satisfy regulatory requirements mandating the use of private connectivity.
Azure ExpressRoute Pricing
- Billing Models:
- Unlimited data – all inbound and outbound data transfer is free.
- Metered data – all inbound data transfer is free but outbound data transfer is billed per GB. The rate of data transfer varies by region.
- ExpressRoute billing begins when a service key is issued to the customer.
- If the service is active for the entire month, you will be billed for the monthly fee regardless of your usage. However, if you cancelled the service during the month, then you are charged for the hours used.
Validate Your Knowledge
Question 1
Question Type: Hotspot
For each of the following items, choose Yes if the statement is true or choose No if the statement is false. Take note that each correct item is worth one point.
Correct Answer: No – No – No
A resource group is a container that holds related resources for an Azure solution. The resource group can include all the resources for the solution or only those resources that you want to manage as a group. You decide how you want to allocate resources to resource groups based on what makes the most sense for your organization.
The resource group stores metadata about the resources. Therefore, when you specify a location for the resource group, you are specifying where that metadata is stored. Resource groups are free, but resources inside will have their corresponding costs.
Remember these two important concepts about resource groups:
– When you delete a resource group, all resources in the resource group are also deleted.
– Azure resource groups are regional in scope, but they can contain Azure resources that span multiple regions
In Azure, bandwidth refers to data moving in and out of Azure data centers. Inbound data transfers (i.e. data going into Azure) are always free, while outbound data transfer is charged at the normal rate.
The statement that says: Multiple resource groups in an Azure subscription will incur additional costs is incorrect because resource groups are free, but the resources within it will have their corresponding costs.
The statement that says: Data inbound to Azure from an on-premises network over ExpressRoute will be charged at standard data transfer rates is incorrect because all bandwidth inbound to Azure is always free.
The statement that says: Data outbound from Azure to an on-premises network over a VPN connection is free is incorrect because bandwidth going out of Azure will be charged at standard data transfer rates other than those explicitly covered by the Content Delivery Network or ExpressRoute pricing.
References:
https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/overview
https://azure.microsoft.com/en-us/pricing/details/bandwidth/
https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/manage-resource-groups-portal
Note: This question was extracted from our AZ-900 Microsoft Azure Fundamentals Practice Exams.
For more Azure practice exam questions with detailed explanations, check out the Tutorials Dojo Portal:
Azure ExpressRoute Cheat Sheet Resources:
https://docs.microsoft.com/en-us/azure/expressroute/expressroute-introduction
https://azure.microsoft.com/en-us/services/expressroute/
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Written by: Jon Bonso
