FirstBuy is a rapidly growing global e-commerce company. The company hosts its web application on Alibaba Cloud. The application serves both static and dynamic content. Transactional data is stored in an ApsaraDB RDS database.
Lately, customers have been complaining about slow page loading speeds.
As a Cloud Architect, which combination of actions can you take to solve this problem? (Correct answers: 2)

• A. Enable read/write splitting for the ApsaraDB RDS instance.
• B. Set up an AnalyticDB for MySQL cluster for transactional data.
• C. Host the dynamic web content in OSS.
• D. Configure a multiple-zone deployment for the ApsaraDB RDS instance.
• E. Set up an Alibaba Cloud CDN distribution.

Kimiko works for a multinational retail chain that has just extended its internal business management services to Alibaba Cloud. They want to ensure the security and high-speed connectivity between its on-premises data center and multiple VPCs across different regions on Alibaba Cloud. The company wants to minimize network latency and ensure high availability without managing individual VPN connections for each VPC.
Which Alibaba Cloud service should the company use to achieve this goal?

• A. Alibaba Cloud NAT Gateway
• B. Alibaba Cloud Express Connect with Transit Router
• C. Alibaba Cloud VPN Gateway
• D. Apsara Stack (private cloud deployment)

A company has a web server running on an Elastic Compute Service (ECS) instance that is bound with an Elastic IP address. The ECS instance resides in a default security group within a VPC. The network ACL has been modified to block all traffic. Keran is a Cloud Architect and has been assigned the task of making the web server accessible from everywhere on port 443.
Which combination of steps can Keran take to accomplish this task? (Correct answers: 2)

• A. Update the network ACL to allow inbound TCP port 443 from source 0.0.0.0/0 and outbound TCP ports 1024-65535 to destination 0.0.0.0/0.
• B. Create a security group rule to allow TCP port 443 from source 0.0.0.0/0.
• C. Create a security group rule to allow TCP port 443 to destination 0.0.0.0/0.
• D. Update the network ACL to allow inbound/outbound TCP port 443 from source 0.0.0.0/0 and to destination 0.0.0.0/0.
• E. Update the network ACL to allow TCP port 443 from source 0.0.0.0/0.

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

Ibrahim manages a large-scale manufacturing plant equipped with state-of-the-art instrumentation and telemetry that collects various information about the machines and products. These sensors collectively generate 1 TB worth of logs each day. Each notification is approximately 2 KB in size. You have been contracted to design a solution to ingest and store these logs for future analysis.
Ibrahim wants a highly available solution, but also wants to minimize costs. Additionally, he does not want to manage additional infrastructure. To meet their business requirements, they need to keep 14 days of data available for immediate analysis, and archive any other data older than 14 days.
What is the MOST operationally efficient solution that meets these requirements?

• A. Deploy ECS instances with Server Load Balancer (SLB) to ingest alerts and store them in OSS. Utilize lifecycle rules to archive data after 14 days.
• B. Use DataHub to feed alerts into Alibaba Cloud Elasticsearch and manage retention through snapshots and manual deletions.
• C. Use Apache Kafka managed on Alibaba Cloud to connect logs from devices, feeding into SLS for real- time analysis and eventual archiving to OSS manually every 14 days.
• D. Use Alibaba Cloud Log Service (SLS) to ingest log data, enabling real-time analysis with integrated dashboards and queries. Use SLS export features to move logs older than 14 days to Object Storage Service (OSS) with lifecycle policies to transition to Archive Storage.