リアル試験問題ACA-Operator問題集試験問題はここにある [2022年02月]
最新の2022年02月効果的なACA-Operatorテスト問題を使って合格突破
質問 34
A developer has written a web application using a microservice architecture, in such an architecture, the client (web browser or mobile application) first initiates a request. The request first reaches the load balancer, then goes through an authentication service, a billing service, then requests a resource, and finally a result is returned. How many spans does such a call chain consist of?
- A. 0
- B. 1
- C. 2
- D. 3
正解: D
解説:
Explanation
1-request, 2-load balancer, 3-authentication service, 4-billing service, 5-resource request
質問 35
Which of the following steps is NOT mandatory when creating an API through Alibaba Cloud API Gateway?
- A. Attach a domain name
- B. Define basic API information
- C. Define API Request parameters
- D. Define the API backend service
正解: A
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/29478.htm
質問 36
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. Resource Orchestration Service (ROS)
- B. Resource Access Management (RAM)
- C. Server Load Balancer (SLB)
- D. Auto Scaling
正解: A
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/25857.htm
質問 37
Which of the following methods can NOT be used for operating Alibaba Cloud Elastic Compute Service (ECS) instances?
- A. SDK
- B. Console
- C. CLI
- D. CloudFormation
正解: D
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/25422.htm
質問 38
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. Message Service provides synchronous notification to ensure the consistency between the message acknowledgment and event processing.
- B. The consumer type of the event notification message can be HTTP Server, Queue, or Topic.
- 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: B,C
質問 39
RAM supports custom policies.
- A. True
- B. False
正解: A
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/93733.htm
質問 40
Which of these is NOT a function of CloudMonitor?
- A. Set alarm rules for any of CloudMonitor's metrics
- B. Automatically take remedial action when an alarm triggers
- C. Set notification methods for different alarms
- D. Set the alarm rule effective period (the time during which the alarm may trigger)
正解: B
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/35170.htm
質問 41
Alibaba Cloud ActionTrail is a service that monitors and records the actions of your Alibaba Cloud account, including the access to and use of cloud products and services through the Alibaba Cloud console, API operations, and SDKs.
- A. True
- B. False
正解: A
質問 42
Which configuration language does Terraform support?
- A. XML
- B. YAML
- C. Python
- D. HCL
正解: D
解説:
Explanation
https://www.terraform.io/docs/language/syntax/configuration.html
質問 43
Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?
- A. Alibaba Cloud Certificate Service keys are loaded into memory in plaintext format ONLY when needed.
- B. Alibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key.
- C. Alibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to ensure the security of your certificate's private key
- D. The plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly
正解: A
質問 44
Which Alibaba Cloud service is an automated operations and maintenance (O&M) service to execute O&M tasks?
- A. Operation Orchestration Service (OOS)
- B. Resource Access Management (RAM)
- C. Maintenance Orchestration Service (MOS)
- D. Resource Orchestration Service (ROS)
正解: A
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/120556.htm
質問 45
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. Request response mode
- B. Waiting for callback mode
- C. Synchronization mode
- D. Asynchronous mode
正解: D
解説:
Explanation
Asynchronous mode is only possible with the combination of MNS
service.https://static-aliyun-doc.oss-cnhangzhou.aliyuncs.com/download%2Fpdf%2F122479%2FBest_Practices_
質問 46
A Developer is creating a Function Compute function. This function requires around 1 GB of temporary storage for files while executing. These files will not be needed after the function is completed for a fixed period. How can this developer MOST efficiently handle the temporary files?
- A. Store the files in Cloud Disk and delete the files when Function Compute function call completes.
- B. Store the files in the /tmp directory on a temporary ECS instance, and delete the files at when the Function Compute function call completes.
- C. Copy the files to NFS and delete the files when the Function Compute function call completes.
- D. Copy the files to an OSS bucket with a lifecycle policy configured to delete the files automatically.
正解: D
質問 47
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. Use SLB for extra protection
- C. Enable "Hotlink protection" of OSS and use an HTTP Referer whitelist to prevent unauthorized users from accessing your data
- D. Change the website access mode to HTTPS
正解: B
解説:
Explanation
You can configure a HTTP Referer whitelist for a bucket to prevent extra fees caused by unauthorized access to the bucket.
https://www.alibabacloud.com/help/doc-detail/31901.htm
質問 48
Which of the following features are unique to Alibaba Cloud Container Registry, as compared with Docker Hub? (Number of correct answers: 2)
- A. You can set your image repository access to public or private.
- B. For source code hosted on websites outside China, Container Registry can use servers outside China to build Docker images, even when you are using a Container Registry instance in Mainland China.
- C. You can create and delete image repositories in different regions based on your needs.
- D. Container Registry can automatically build new Docker images when source code changes.
正解: B,C
質問 49
Which of the following services is used to establish private network connections between virtual private clouds (VPCs) in different regions, or between VPCs and data centers?
- A. CEN (Cloud Enterprise Network)
- B. NAT Gateway
- C. Express Connect
- D. VPN Gateway
正解: A
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/59870.htm
質問 50
Which of these services can be used to monitor Alibaba Cloud resources and send alerts? (Number of correct answers: 3)
- A. ActionTrail
- B. Object Storage Service (OSS)
- C. CloudMonitor
- D. Cloud Config
正解: A,C,D
解説:
Explanation
OSS is an object storage service.
質問 51
Which database utility is suitable for managing databases in a centralized manner?
- A. DAS
- B. DTS
- C. DMS
- D. DBS
正解: C
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/47550.htm
質問 52
Alibaba Cloud ActionTrail is a service that monitors and records the actions of your Alibaba Cloud account, including the access to and use of cloud products and services through the Alibaba Cloud console, API operations, and SDKs.
- A. True
- B. False
正解: A
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/28804.htm
質問 53
Which of these are important concepts in Terraform's configuration language, HCL? (Number of correct answers: 3)
- A. Resource
- B. Variable
- C. Provider
- D. Service Mesh
正解: A,B,C
質問 54
Which database utility is suitable for database migration?
- A. DAS
- B. DMS
- C. DTS
- D. DBS
正解: C
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/176063.htm
質問 55
When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)
- A. Applies indices to fields to contain many records.
- B. Apply indexing to fields of fixed length (preferably not long fields).
- C. Adhere to the rightmost prefix principle when using composite indexes
- D. Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.
- E. A table should not contaiiAiore than 6 indexed fields.
正解: B,D,E
質問 56
In Alibaba Cloud, a developer finds that the ECS instance he created does not have public IP assigned. The API method used was "CreateInstance". Which of the following is the most likely reason?
- A. The CreateSecurityGroup API call was not made
- B. The developer did not call AllocatePublicIpAdress (an additional API call), which is needed to assign a public IP
- C. The ECS was not restarted after being created
- D. The CreateDisk API call was not made
正解: B
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/25544.htm
質問 57
PolarDB supports three engines: MySQL, PostgreSQL and Oracle.
- A. True
- B. False
正解: B
解説:
Explanation
https://www.alibabacloud.com/help/doc-detail/58764.htm
質問 58
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Alibaba Cloud ACA-Operator 認定試験の出題範囲：
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正真正銘で最適な資料ACA-Operatorオンライン練習試験：https://www.passtest.jp/Alibaba-Cloud/ACA-Operator-shiken.html