AZ-700 Question 97
Select 2You are migrating a legacy application server from your on-premises data center to Azure. This server must retain its existing IP address so that users and dependent services do not need reconfiguration or DNS updates. You plan to use Azure Extended Network to extend the same IP subnet used on-premises into Azure. Which two actions must you take to ensure that the Azure VM can use the on-premises IP address with Azure Extended Network?
- A
Use a route-based Site-to-Site VPN or ExpressRoute circuit to connect the on-premises network with Azure.
- B
Install and enable the Azure Extended Network agent on the newly migrated Azure VM.
- C
Establish a point-to-site VPN for each user requiring access to the extended IP subnet.
- D
Assign a new private IP address to the Azure VM that does not overlap with the on-premises IP range.
Show answer and explanation
Correct answers: A, B
Explanation
Azure Extended Network enables you to keep the same IP address range for certain workloads as you migrate them to Azure, avoiding the need for network reconfiguration on user endpoints or dependent services. A route-based Site-to-Site VPN or ExpressRoute connection is required to handle the necessary routing for subnet bridging. Additionally, the Azure Extended Network agent on the VM ensures proper participation in the extended subnet. For more details on prerequisites and supported configurations, refer to Microsoft� official documentation on Azure Extended Network.
- A. Correct.
Correct. Azure Extended Network requires layer 3 connectivity provided by either a route-based Site-to-Site VPN or an ExpressRoute connection. This ensures traffic can flow properly between on-premises and Azure for the extended subnet.
- B. Correct.
Correct. The Azure Extended Network agent must be installed and configured on each VM that will use the same IP address space as on-premises. Without this agent, the VM cannot participate in the extended subnet.
- C. Incorrect.
Incorrect. A point-to-site VPN alone provides a secured channel for individual clients, not a subnet-level bridging mechanism. It does not extend an on-premises IP subnet into Azure.
- D. Incorrect.
Incorrect. The goal is to retain the same on-premises IP address in Azure for the legacy server. Assigning a new, non-overlapping IP defeats the purpose of Azure Extended Network.