ACA-Cloud1無料問題集「Alibaba Cloud ACA Cloud Computing Associate」

質問 1

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following is not the feature supported by Alibaba Cloud Auto Scaling?

（A）Elastic Scale-Out

（B）Elastic Self-Diagnostic

（C）Elastic Self-Health

（D）Elastic Scale-In

正解：B 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 2

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding existing ECS instances into the scaling group, whose status however must be________.

（A）Preparing

（B）Created

（C）Stopped

（D）Running

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

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）Use content delivery network, CDN, to accelerate the caching of the platform's css, JavaScript files etc.

（B）Import data into OSS to share the storage load of the platform.

（C）By adding a SLB instance and increase the number of ECS instances to reduce the work load on current ECS instances.

（D）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.

正解：A、D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

Anti-DDoS is one of the major features in Alibaba Cloud Security Service. Many websites have experienced different types of DDoS attacks, an accurate understanding of DDoS is crucial to protecting websites. Which of the following descriptions about DDoS attack is the most accurate one?

（A）The main target for DDoS attack is the database.

（B）DDoS attack will try to crack the password through a large number of attempts.

（C）The main purpose of DDoS attack is to make the target server unable to provide service normally, which is one of the network attacks that are most difficult to defend.

（D）The purpose of DDoS attack is to steal confidential information.

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

What is the full name of ECS?

（A）Elastic Compute Service

（B）Elastic Computing Server

（C）Elastic Cost Server

（D）Elastic Communication Server

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

Alibaba Cloud relational database service (RDS) is a stable, reliable and elastic online database service. RDS supports below database types? (Choose three.)

（A）PostgreSQL

（B）SQL Server

（C）MySQL

（D）Oracle database

正解：A、B、C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 7

Which of the following statements is true for RDS?

（A）None of the above is true.

（B）Resources are not shared among the databases in the same RDS instance.

（C）Databases with the same name are allowed in the same instance.

（D）Multiple databases can be created in one RDS instance.

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

ACA-Cloud1 無料問題集「Alibaba Cloud ACA Cloud Computing Associate」

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