AWS Certified Advanced Networking Specialty Practice Exam

What is the best design for an IPSec VPN that prioritizes sensitive application traffic?

1. Terminate a VPN connection on an Amazon EC2 instance with a standard configuration

2. Use a dedicated hardware appliance for the VPN connection

3. Terminate on an EC2 instance with software supporting QoS and use DSCP markings

4. Separate the sensitive application traffic into a different subnet

The correct answer is: Terminate on an EC2 instance with software supporting QoS and use DSCP markings

Terminating the VPN connection on an EC2 instance with software that supports Quality of Service (QoS) and using Differentiated Services Code Point (DSCP) markings is the best design for prioritizing sensitive application traffic. This approach enables the implementation of traffic management policies that can prioritize sensitive application data over other types of traffic. By leveraging QoS, you can define and enforce which types of traffic should receive higher priority, ensuring that sensitive application data gets the necessary bandwidth and low latency. DSCP markings help in classifying and managing packets as they traverse the network, allowing routers and switches to recognize the importance of the traffic and handle it accordingly. This design provides the flexibility to adjust traffic prioritization based on the application's needs and allows for better performance and reliability for critical data transmissions. Additionally, it retains the ability to scale and adapt within the AWS cloud environment, making it a more versatile solution. Using a dedicated hardware appliance for the VPN connection, for instance, might offer robust performance and security features but may not provide the same level of control over traffic prioritization as QoS configurations allow. While terminating on an EC2 instance with a standard configuration can work for general purposes, it lacks the advanced traffic management capabilities necessary for prioritizing sensitive application traffic