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

質問 1

A video streaming company uses SLB to distribute user requests to 30 ECS instances (the 30 ECS instances have the same configuration). Yet, the company finds that the service traffic soars dramatically every night from 20:00 to 02:00. According to their calculation, the evening traffic is 100% higher than the traffic in other periods of time. To properly respond to user requests, which of the following methods is most preferred from the perspective of cost and implementation simplicity?

（A）Configure Auto Scaling appropriately to automatically upgrade/downgrade the ECS instances.

（B）Manually create 30 ECS instances using the custom image, and then add them to SLB every night before 20:00 and remove them after 02:00.

（C）Create 30 ECS instances based on the custom image and add them to SLB. Then, configure weights for these ECS instances to respond to user requests every night from 20:00 to 02:00, and reset those weights to zero for other periods of time.

（D）Configure Auto Scaling appropriately to automatically add or reduce ECS instances.

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

Alibaba Cloud provides powerful security services (the same level of security services used to support Alibaba Group double 11 shopping festival). However, you have to pay first before using any of the security services.

（A）FALSE

（B）TRUE

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 3

A/Anis a copy of data on a disk at a certain point in time.

（A）image

（B）snapshot

（C）template

（D）EIP

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

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 5

Which of the following statements about file uploading to OSS strategy is not correct?

（A）If you are using OSS to store some log files which are continuously being updated, you better choose streaming method to be able to append to one existing object instead of overwriting.

（B）All file uploading method provided by Alibaba Cloud OSS service will support resuming from break point.

（C）If you need to upload very large file you better use multi-part uploading to get the capability of resuming from break point.

（D）If you are uploading some small files (<1m), you can choose using put method to be able finish uploading in one http request.

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 6

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. Which of the following application scenarios are suitable for Auto Scaling?
(Choose three.)

（A）You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be reduced automatically to save costs when business needs drop.

（B）You want to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be automatically upgraded (with more Memory, more powerful CPU) when needed.

（C）When an ECS instance reacts abnormally in a scaling group, Auto Scaling will create a new ECS instance to take over the computing tasks conducted by the faulty instance.

（D）You need to flexibly adjust elastic computing resources based on your business needs, and ECS instances will be added seamlessly to address traffic peaks and surges.

正解：A、C、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

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)

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

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