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

質問 1

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 2

If you are running an online ticket booking service with relatively fixed traffic, then which kind of charging mode is more suitable for you?

（A）Pay-As-You-Go

（B）Paypal-pay

（C）bitcoin-pay

（D）Prepaid

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 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 4

When we talk about the 'Elastic' feature for ECS product, we are not talking about.

（A）Elastic Computing

（B）Elastic Storage

（C）Elastic Administration

（D）Elastic Network

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

A customer uses Alibaba Cloud Auto Scaling service and creates a scaling group. He/she sets the "Minimum number of instances" to 6 and "Maximum number of instances" to 8.
After correctly configuring scaling settings, the customer adds a scaling rule "Adjust to 10 ECS instances", and creates a scheduled task based on this rule.
And then, the customer checks the scaling group and see it already contains 6 valid ECS instances, he/she then enables this scaling group immediately.
How many ECS instances are left in the scaling group when the scheduled task is activated once?

（A）Six

（B）Five

（C）Ten

（D）Eight

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 6

As a cloud computing service provider, Alibaba Cloud provides security services including. (Choose two.)

（A）Security operation for underlying hardware of cloud computing.

（B）Application maintenance in ECS instances.

（C）IP white list setting for RDS.

（D）Security isolation between cloud computing tenants.

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 7

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)

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

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