Exam AZ-720 topic 6 question 52 discussion

The most common reason for a site-to-site VPN connection not being established is a mismatch in the pre-shared keys (shared secrets) on both ends of the connection. This is often the first thing that should be checked when a VPN connection fails to establish. Therefore, the correct answer should be: A. Identify the shared key by running this PowerShell cmdlet: Get-AzVirtualNetworkGatewayConnectionSharedKey. This cmdlet retrieves the pre-shared key for the specified Azure site-to-site VPN connection, which can then be compared with the pre-shared key configured on the on-premises VPN device to ensure they match. If the keys don't match, the VPN connection will fail to establish. The other options are not as relevant: - Option B, the cmdlet Get-AzVirtualNetworkGatewayConnectionVpnDeviceConfigScript, is used to generate a configuration script for the on-premises VPN device, which is useful, but not the first step in troubleshooting. - Options C and D refer to certificate files that are relevant in certificate-based authentication scenarios, not a pre-shared key (PSK) authentication scenario, which is typically used in site-to-site VPNs.

A is correct. https://learn.microsoft.com/en-us/powershell/module/az.network/get-azvirtualnetworkgatewayconnectionsharedkey?view=azps-9.6.0