When you initiate a request via an Open API provided by Alibaba Cloud Elastic Compute Service (ECS), whether the request is initiated successfully or not, the server will return______________________ as a unique identifier.
Answer(s): B
In Alibaba Cloud ECS, whenever an API request is made, a unique identifier called the RequestId is generated and returned. This ID is generated regardless of the request's success or failure. RequestId serves as a unique identifier for tracking and debugging specific requests within the ECS environment, allowing users to trace and troubleshoot individual API calls. This practice ensures that issues can be resolved more efficiently by tracking the specific request, and it is a common practice across many Alibaba Cloud services.
Alibaba Cloud ECS API Documentation
In some cases, you can purchase Elastic Compute Service (ECS) instances in Pay-As-You-Go mode to meet the demands for requiring additional computing resources in a particular period of time and set an auto-release time to release these Pay-As-You-Go instances later. ___________________ is a correct description of this operation.
Answer(s): C
Alibaba Cloud ECS allows users to set an auto-release time for Pay-As-You-Go instances, giving flexibility in handling temporary workloads without manually releasing instances. Notably, the auto- release time can be adjusted multiple times even after the instance has been created, allowing for modifications as business needs change. This feature provides a convenient way to manage costs by automatically releasing instances when they are no longer needed. However, once the auto-release time is set, it must be adjusted or canceled if changes are required.
Alibaba Cloud ECS Instance Auto-Release
A challenging thing in the gaming industry is the unpredictable and fluctuating business traffic. For example, 1 ECS instance is enough to meet all business demands today; however, we may need 10 ECS instances tomorrow.In this situation, it is difficult to predict the number of ECS instances required. If we use too few ECS instances, we may not be able to cope with business peaks; whereas if we use too many ECS instances, we may introduce unnecessary costs.On Alibaba Cloud, _______________ is the best product portfolio to cope with the gaming scenario described above.
Answer(s): A
In this scenario, a combination of Server Load Balancer (SLB), ECS, ApsaraDB for RDS, and Auto Scaling is ideal. SLB distributes incoming traffic across multiple ECS instances, ensuring high availability and reliability. Auto Scaling automatically adjusts the number of ECS instances based on demand, managing costs efficiently by scaling out during peak times and scaling in when demand decreases. ApsaraDB for RDS provides a managed database service that handles increasing database demands without requiring complex manual scaling. This portfolio is optimal for fluctuating gaming traffic as it ensures load balancing, scalability, and cost control.
Alibaba Cloud Auto Scaling and SLB Documentation
You deployed a MySQL database on an Alibaba Cloud Elastic Compute Service (ECS) instance. Due to increased traffic, there are more and more O&M tasks, such as database backup and Master/Slave database synchronization, and these tasks are becoming overwhelming.Therefore, you can use Alibaba Cloud ___________ to solve this issue.
ApsaraDB for RDS is Alibaba Cloud's managed database service that simplifies O&M tasks for relational databases like MySQL. It offers built-in features for automatic backups, high availability, and Master/Slave synchronization, which reduces manual intervention and helps scale the database as traffic grows. By migrating to ApsaraDB for RDS, users can offload complex O&M responsibilities to Alibaba Cloud, ensuring a more efficient and scalable database solution for high-traffic applications.
Alibaba Cloud ApsaraDB for RDS Documentation
Alibaba Cloud SLB can help distribute traffic among multiple backend servers. Which of the following statements is correct about backend servers?
Alibaba Cloud Server Load Balancer (SLB) is designed to distribute incoming network traffic across multiple ECS instances within Alibaba Cloud, enhancing fault tolerance and application reliability. Backend servers for SLB must be Alibaba Cloud ECS instances, as SLB is specifically optimized to work within the Alibaba Cloud ecosystem. While it does not support instances from other cloud providers, it ensures integration and performance with Alibaba Cloud's ECS instances.
Alibaba Cloud SLB Documentation
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