How many tunnels are provided for a VPN connection created between AWS and an on-premise infrastructure?
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A. B. C. D.Answer - B.
The AWS documentation mentions the following on VPN connections.
You use a VPN connection to connect your network to a VPC.
Each VPN connection has two tunnels, with each tunnel using a unique virtual private gateway public IP address.
It is important to configure both tunnels for redundancy.
When one tunnel becomes unavailable (for example, down for maintenance), network traffic is automatically routed to the available tunnel for that specific VPN connection.
For more information on VPC connections, please visit the below URL:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_VPN.htmlWhen creating a VPN connection between AWS and an on-premise infrastructure, the number of tunnels provided can vary based on the configuration. The most common options are:
Single tunnel: This option provides one VPN tunnel between AWS and the on-premise infrastructure. While this is the most basic configuration, it may not provide sufficient redundancy in case of a failure.
Dual tunnel: This option provides two VPN tunnels between AWS and the on-premise infrastructure. The tunnels are configured in an active-passive configuration, where one tunnel is active while the other is in standby mode. In case of a failure, the standby tunnel takes over, providing a more reliable connection.
Multi-tunnel: This option provides four or more VPN tunnels between AWS and the on-premise infrastructure. The tunnels are configured in an active-active configuration, where all tunnels are active and traffic is load-balanced between them. This configuration provides the highest level of redundancy and can handle larger amounts of traffic.
In summary, the number of tunnels provided for a VPN connection created between AWS and an on-premise infrastructure can vary based on the chosen configuration. The options are single tunnel, dual tunnel, and multi-tunnel, which provide one, two, and four or more tunnels, respectively. The correct answer to the question would depend on the specific configuration chosen.