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

質問 1

Company builds a music download website based on OSS and ECS, and users can download mp3 files after registering for the website. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, engineers find that many user download requests are raised from search engine but not the website itself. In this case, which of the following measures is thought to be able to address this issue.

（A）Migrates music files from the OSS to the data disks for ECS instances.

（B）Changes the website access mode to HTTPS.

（C）Introduce SLB for extra protection.

（D）Limits access sources by configuring "Anti-leech settings" of OSS bucket attributes.

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 2

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 3

Server Load Balancer supports health checks for ECS instances and allows user to specify the frequency. If an ECS instance does not qualify the health check, traffic will not be forwarded to that instance, thereby ensuring application availability.

（A）FALSE

（B）TRUE

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 4

A large shopping mall deploys a new video surveillance system. The five-floor building in which the mall is located installed 35 HD cameras to monitor the major exits. The surveillance system is deployed on an ECS instance, which has four 2 TB data disks to store video data.
However, video data grows rapidly and the engineers find that the ECS will run out of storage space within 2 weeks.
In this case,product is thought to be the best solution for addressing the storage challenge while ensuring quick access to historical video data when needed.

（A）OSS

（B）ECS

（C）Container Service

（D）CDN

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 5

You can create a custom image for ECS using which of the followings? (Choose two.)

（A）Memory snapshot

（B）System disk snapshot

（C）Data disk snapshot

（D）CPU snapshot

正解：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 6

Cloud disks are reliable because they use_________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.

（A）a file system

（B）a Linux file system

（C）a double copy distributed system

（D）a distributed file management system with 3 redundant copies

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 7

Which method is not supported by OSS to create a bucket?

（A）through ECS instance filesystem directory operation

（B）through oss cmd tool

（C）through OSS API/SDK

（D）through cloud console

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)

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

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