Online Access Free ACA-Cloud1 Exam Questions

Company A builds a sales management platform based on Alibaba Cloud services, using 3 ECS instances. One of the ECS instance has MySQL installed as the database server of the platform, the other two are used as WEB servers. After some time, due to the rapid increase of employees and sales analysis requests, the performance of the platform is challenged in terms of response time. Through CloudMonitor, it is found that the average CPU usage reaches 70% for the two WEB server ECS instances and the database load reaches
75% for the database server ECS instance. In this situation, company A may choose which Alibaba Cloud services to improve the performance. (Choose two.)

• A.Import data into OSS to share the storage load of the platform.
• B.By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances.
• C.Use RDS to replace existing self-built database, in order to obtain better database performance; also creating RDS read-only instances to handle read-only requests, hence reduce the work load on master RDS instance.
• D.Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc.

SQL injection is a common application layer attack, usually through building special input parameters and pass it to web applications to steal or sabotage the application data. Which of the following is the target for SQL injection?

• A.Pictures on server
• B.Confidential files on the server
• C.Web application
• D.Database

Your friend purchases some Alibaba Cloud resources and uses them to build an online training website. Before the site goes online, your friend wants to perform some performance tests but doesn't know how to do it. In this case, which of the following services can help?

• A.After-Sales Support Service
• B.None Of The Above
• C.Load and Performance Testing Service
• D.Support Ticket Service

Multiple lower-configuration I/O-optimized ECS instances can be used withto deliver a high- availability architecture.

• A.RDS
• B.OSS
• C.Auto Scaling
• D.Server Load Balancer

Your website has high volume of traffic and sudden spikes for a very short time. In this scenario, can manage traffic peak efficiently and maintain a consistent user experience.

• A.RDS
• B.VPC
• C.Auto Scaling
• D.Server Load Balancer