AZ-700 Question 156
Single answerYour organization plans to deploy a site-to-site VPN connection and an ExpressRoute circuit into Azure. The site-to-site VPN requires up to 1.25 Gbps of throughput, while the ExpressRoute circuit will need 2 Gbps. You want to select gateway scale units that meet these performance requirements while minimizing costs. Which combination of gateway scale units is most appropriate?
- A
A. Deploy VpnGw1 for the VPN and ErGw1Az for ExpressRoute
- B
B. Deploy VpnGw3 for the VPN and ErGw1Az for ExpressRoute
- C
C. Deploy VpnGw4 for the VPN and ErGw2Az for ExpressRoute
- D
D. Deploy VpnGw2 for the VPN and ErGw2Az for ExpressRoute
Show answer and explanation
Correct answer: B
Explanation
In Azure, VPN Gateway scale units (VpnGw SKUs) have varying performance tiers. VpnGw3 is recommended for site-to-site VPN throughput up to 1.25 Gbps, while VpnGw4 and VpnGw5 are higher-tier options that support greater bandwidth but cost more. For ExpressRoute, ErGw1Az supports 2 Gbps, ErGw2Az supports 5 Gbps, and ErGw3Az supports 10 Gbps. Since the requirement here is 2 Gbps for ExpressRoute and 1.25 Gbps for VPN, VpnGw3 and ErGw1Az are the most suitable and cost-effective choices. For additional information, refer to the official Azure VPN Gateway documentation at https://learn.microsoft.com/azure/vpn-gateway/vpn-gateway-about-vpngateways.
- A. Incorrect.
Option A: VpnGw1 supports up to approximately 650 Mbps, which is below the 1.25 Gbps requirement. Although ErGw1Az (2 Gbps) meets the ExpressRoute requirement, the VPN gateway is under-provisioned.
- B. Correct.
Option B: VpnGw3 supports up to approximately 1.25 Gbps, which aligns well with the VPN requirement, and ErGw1Az (2 Gbps) satisfies the ExpressRoute bandwidth need. This combination meets both requirements at a reasonable cost.
- C. Incorrect.
Option C: VpnGw4 supports up to 5 Gbps and ErGw2Az supports 5 Gbps. While this meets the requirements, it is over-provisioned for a 1.25 Gbps VPN and 2 Gbps ExpressRoute, leading to unnecessary cost.
- D. Incorrect.
Option D: VpnGw2 supports up to approximately 1 Gbps, which falls short of the 1.25 Gbps VPN requirement. Although ErGw2Az (5 Gbps) covers the ExpressRoute throughput, the VPN gateway would not be sufficient.