ACA-Operator無料問題集「Alibaba Cloud ACA System Operator Certification」

質問 1

A developer needs to use some sensitive business data and operational data in the process of developing a program, but the data should be protected (encrypted or anonymized) as much as possible. In order to facilitate and secure management of data encryption keys, the developer can use Alibaba Cloud Key Management Service (KMS) envelope encryption technology. Which of these statements is NOT correct, regarding KMS?

（A）The user uses the master key created on KMS to encrypt and decrypt the generated data key.

（B）The master key generated by KMS is also kept by the user.

（C）Envelope encryption is an encryption mechanism similar to digital envelope technology. The technology allows you to store, transfer and use encrypted data by encapsulating their Data Keys (DKs) in an envelope, instead of \y encrypting/decrypting data directly with Customer Master Keys (CMKs).

（D）Developers can generate a plaintext data key and a ciphertext data key by calling the GenerateDataKey interface.

正解：A、C、D 解答を投票する

質問 2

You are responsible for the system operations of a product and have implemented the cloud infrastructure in the Alibaba Cloud platform. When business loads increase, _______ automatically adds ECS instances to ensure sufficient computing capabilities. When business loads decrease, the same service automatically removes ECS instances to save costs. Which service are you using?

（A）Server Load Balancer (SLB)

（B）Resource Orchestration Service (ROS)

（C）Auto Scaling

（D）Resource Access Management (RAM)

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 3

A company is developing a music application based on OSS and ECS, their users can download mp3 files after signing up for the application. Recently, the public network traffic to the OSS has doubled but the increase of registered users is less than 10%. After in-depth analysis, system operators find that many download requests are requested from the external search engine. In this case, which of the following measures is thought to be able to address this issue?

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

（B）Change the website access mode to HTTPS

（C）Use SLB for extra protection

（D）Enable "Hotlink protection" of OSS and use an HTTP Referer whitelist to prevent unauthorized users from accessing your data

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 4

Which database utility is suitable for database migration?

（A）DAS

（B）DBS

（C）DTS

（D）DMS

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

Serverless Workflow allow you to orchestrate distributed tasks in sequence, branch, and parallel modes, and ensure that tasks are reliably coordinated according to your workflow logic. Which of the following service integration modes is not supported by Serverless Workflow?

（A）Waiting for callback mode

（B）Request response mode

（C）Asynchronous mode

（D）Synchronization mode

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

You can create an event notification rule in Message Service and push notifications to the specified consumer in the form of messages, to receive events from specified Alibaba Cloud resources. Which of the following options are correct statements about the Message Service (MS) service? (Number of correct answers: 2)

（A）The consumer type of the event notification message can be HTTP Server, Queue, or Topic.

（B）Message Service provides synchronous notification to ensure the consistency between the message acknowledgment and event processing.

（C）The event notification message is retained within the valid time. When you fail to receive an event message, the event notification message is retained based on the specified retry policy.

（D）Event Notifications can cross regions.

正解：A、C 解答を投票する

ACA-Operator 無料問題集「Alibaba Cloud ACA System Operator Certification」

弊社を連絡する

関連リンク

トップ試験