A developer working from home occasionally needs to reach a database that has only a private IP address inside an Azure virtual network. There is no VPN device at the developer's end and no office network to connect. What is the appropriate answer?
Microsoft Certified: Azure Fundamentals (AZ-900), objective architecture-and-services. Azure architecture and services medium
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The options
Correct A point-to-site VPN connection from the developer's machine into the virtual network
Correct. Point-to-site builds a tunnel from one client machine to the virtual network gateway, which is exactly the shape of a single remote person needing occasional private access.
Not correct A site-to-site VPN connection
Wrong shape. Site-to-site joins a whole network to the virtual network and needs a VPN device with a public address at the far end — which a home laptop is not.
Not correct Give the database a public IP address and allow the developer's home address through the firewall
Wrong. It exposes a database to the internet, depends on a home address that typically changes, and abandons the private-only design for the convenience of one person.
Not correct Order an ExpressRoute circuit
Wrong-sized. A private circuit through a connectivity provider means weeks of lead time and a monthly commitment, for one developer's occasional access.
Why
The VPN gateway offers three shapes and the exam expects you to match them to the scenario: point-to-site for an individual device, site-to-site for an entire on-premises network with a VPN device at its edge, and network-to-network for joining two virtual networks when peering is not what you want. All three are tunnels over the internet; ExpressRoute is the option that leaves the internet out of it.
Where this comes from
- Cited
- Microsoft AZ-900 study guide skill area architecture-and-services.compute-and-networking
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