You are using the OCI Application Load Balancer (ALB) for your web application. You want to implement a blue/green deployment strategy to minimize downtime during application updates. You have two backend sets: 'blue' (the current version) and 'green' (the new version). What is the most efficient way to switch traffic from the 'blue' backend set to the 'green' backend set using the ALB's traffic management capabilities?

• A. Update the health check policy of the 'blue' backend set to mark all servers as unhealthy, forcing the ALB to send traffic to the 'green' backend set.
• B. Create a new listener that points to the 'green' backend set and delete the old listener.
• C. Use the ALB's routing rules to gradually shift traffic from the 'blue' backend set to the 'green' backend set based on a percentage weight.
• D. Update the listener to point directly to the 'green' backend set.

Your organization is migrating a legacy application to OCI. This application relies on a specific IP address for its external communication, and you need to maintain this IP address during the migration. Which OCI Load Balancer feature or configuration can help you achieve this while ensuring high availability for the application?

• A. Configuring the Flexible Load Balancer with a reserved public IP address.
• B. Utilizing the Network Load Balancer (NLB) with its inherent ability to preserve client IP addresses.
• C. Using a private IP address for the load balancer and NAT Gateway for outbound traffic.
• D. Deploying multiple Flexible Load Balancers with different public IP addresses and using DNS round- robin.

You are designing a multicloud architecture where your customer wants to leverage OCI for its cost-effective compute and storage, while utilizing Microsoft Azure's AI/ML services and AWS's extensive serverless capabilities. The application requires low latency and high bandwidth between the clouds. Which of the following approaches provides the LEAST optimal solution for interconnecting these three cloud providers for production workloads?

• A. Connecting OCI to Azure via OCI Azure Interconnect, then establishing an IPSec VPN tunnel from Azure to AWS using Azure's VPN Gateway
• B. Creating IPSec VPN tunnels between OCI, Azure, and AWS, utilizing the native VPN gateways offered by each respective cloud provider for secure, encrypted communication
• C. Establishing a dedicated, low-latency connection between each cloud provider's nearest peering location using a third-party network provider for maximum bandwidth and minimizing network hops
• D. Utilizing OCI FastConnect to establish private peering with Azure and AWS through supported FastConnect partners to ensure dedicated bandwidth and consistent performance

Your organization is deploying a critical database application on OCI. To ensure high availability, you have deployed the database instances across multiple availability domains (ADs) within asingle region. You need to distribute client connections to the database instances and ensure that the load balancer can handle long- lived TCP connections with minimal overhead. Session persistence is not required. Which OCI load balancing solution would you choose in this scenario to minimize latency and connection establishment overhead?

• A. Application Load Balancer with TCP health checks.
• B. Flexible Load Balancer with HTTP health checks.
• C. Network Load Balancer with TCP health checks.
• D. Application Load Balancer with HTTP health checks.

Which of the following is a disadvantage of using a public internet-based VPN connection for migrating large datasets from another cloud provider to OCI?

• A. VPN connections cannot be automated using Infrastructure as Code (IaC) tools
• B. VPN connections are not compatible with all OCI services
• C. The throughput of a VPN connection is limited by the available bandwidth and latency of the public internet
• D. VPN connections are inherently less secure than dedicated private connections