A healthcare organization is deploying its patient management system on Alibaba Cloud. They require:
* Secure, private connectivity between their on-premises servers and Alibaba Cloud VPCs.
* Automated failover to ensure connectivity during outages.
* Scalable bandwidth to handle varying data loads without manual intervention.
Which Alibaba Cloud service should the organization implement to meet these requirements?

• A. NAT Gateway
• B. VPC peering between VPCs
• C. Express Connect with Redundant Connections
• D. VPN Gateway

A worldwide retail company is adapting their e-commerce platform to handle spikes in online traffic during annual sales events. They are using Alibaba Cloud services and need a solution that can automatically scale resources to maintain performance during these peaks.
What solutions should the company implement to efficiently manage their resources during high-traffic periods? (Correct answers: 3)

• A. Set up Application Load Balancer (ALB) to distribute incoming traffic evenly across resources.
• B. Deploy Auto Scaling to automatically scale ECS instances horizontally based on traffic.
• C. Host static images and videos on Object Storage Service (OSS) and configure acceleration with Alibaba Cloud CDN.
• D. Implement Function Compute to handle additional processing demands dynamically.

An application runs on an Elastic Compute Service (ECS) with an Elastic IP address in VPC A within Alibaba Cloud. The application requires access to a database in VPC B. Both VPCs are in the same Alibaba Cloud account.
Which of the following solutions will provide the required access MOST securely?

• A. Make the database instance publicly accessible. Assign a public IP address to the database instance.
• B. Configure a VPC peering connection between VPC A and VPC B.
• C. Create a security group for the database that allows all traffic from the public IP address of the application server in VPC A.
• D. Launch an ECS instance with an Elastic IP address into VPC B. Proxy all requests through the new ECS instance.

A company has a data ingestion workflow that consists of:
* An Alibaba Cloud Simple Message Queue topic for notifications about new data deliveries.
* An Alibaba Cloud Function Compute service to process the data and record metadata.
The company observes that the ingestion workflow fails occasionally because of network connectivity issues.
When such a failure occurs, the Function Compute instance does not ingest the corresponding data unless the company manually reruns the job.
Which combination of actions should a solutions architect take to ensure that the Function Compute instance ingests all data in the future? (Correct answers: 2)

• A. Increase the memory allocation for the Function Compute instance.
• B. Create a Simple Message Queue queue, and subscribe it to the existing Simple Message Queue topic.
• C. Use Triggers to automatically invoke the Function Compute service.
• D. Deploy the Function Compute instance in multiple Regions.
• E. Modify the Function Compute service to read from the Simple Message Queue queue.

Sam runs a gaming startup, and is launching a real-time, massively multiplayer game on Alibaba Cloud.
Based on presales numbers, the startup predicts that there will be millions of concurrent users at launch. To ensure the experience of the gamers, their architecture must be able to deliver sub-50ms latency, scale automatically in response to sudden player surges, and provide efficient session management for millions of concurrent users.
What Alibaba Cloud services can Sam leverage to meet the requirements for the playerbase? (Correct answers: 3)

• A. Use Alibaba Cloud CDN for static assets like game textures.
• B. Use Application Load Balancer (ALB) to distribute traffic to game servers.
• C. Store player data in ApsaraDB for MongoDB to handle unstructured data.
• D. Deploy Tair (Redis OSS-Compatible) for low-latency session caching.
• E. Enable Auto Scaling groups for ECS instances based on CPU utilization.